diff --git a/.codespellignore b/.codespellignore
index 01a9944351..775a161e42 100644
--- a/.codespellignore
+++ b/.codespellignore
@@ -25,3 +25,4 @@ forin
 uper
 slac
 couldn
+ges
diff --git a/web/styles/pygments.css b/web/styles/pygments.css
index cb55bb7dc9..30518d0695 100644
--- a/web/styles/pygments.css
+++ b/web/styles/pygments.css
@@ -36,448 +36,491 @@
 
 /* End non-color Zulip customizations. */
 
-/* Begin Zulip color customizations. */
-
 /* stylelint-disable color-no-hex, no-duplicate-selectors */
 
-/* GitHub-style simple diff colors. These are
-   the same in light and dark modes. */
-.codehilite .gd {
-    color: #d44;
-} /* Generic.Deleted */
-.codehilite .gi {
-    color: #292;
-} /* Generic.Inserted */
+/* Begin Pygments Default Colors */
 
-/* End Zulip color customizations. */
-
-/* Begin Quansight-Labs GitHub Styles */
 .codehilite .hll {
-    background-color: #0969da4a;
+    background-color: #ffc;
 }
 
 .codehilite .c {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment */
 .codehilite .err {
-    color: #cf222e;
+    border: 1px solid #f00;
 } /* Error */
 .codehilite .k {
-    color: #cf222e;
+    color: #008000;
+    font-weight: bold;
 } /* Keyword */
-.codehilite .l {
-    color: #953800;
-} /* Literal */
-.codehilite .n {
-    color: #8250df;
-} /* Name */
 .codehilite .o {
-    color: #116329;
+    color: #666;
 } /* Operator */
-.codehilite .p {
-    color: #24292f;
-} /* Punctuation */
 .codehilite .ch {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment.Hashbang */
 .codehilite .cm {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment.Multiline */
 .codehilite .cp {
-    color: #6e7781;
+    color: #9c6500;
 } /* Comment.Preproc */
 .codehilite .cpf {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment.PreprocFile */
 .codehilite .c1 {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment.Single */
 .codehilite .cs {
-    color: #6e7781;
+    color: #3d7b7b;
+    font-style: italic;
 } /* Comment.Special */
+.codehilite .gd {
+    color: #a00000;
+} /* Generic.Deleted */
 .codehilite .ge {
     font-style: italic;
 } /* Generic.Emph */
+.codehilite .ges {
+    font-weight: bold;
+    font-style: italic;
+} /* Generic.EmphStrong */
 .codehilite .gr {
-    color: #cf222e;
+    color: #e40000;
 } /* Generic.Error */
 .codehilite .gh {
-    color: #0550ae;
+    color: #000080;
+    font-weight: bold;
 } /* Generic.Heading */
+.codehilite .gi {
+    color: #008400;
+} /* Generic.Inserted */
+.codehilite .go {
+    color: #717171;
+} /* Generic.Output */
+.codehilite .gp {
+    color: #000080;
+    font-weight: bold;
+} /* Generic.Prompt */
 .codehilite .gs {
     font-weight: bold;
 } /* Generic.Strong */
 .codehilite .gu {
-    color: #0550ae;
+    color: #800080;
+    font-weight: bold;
 } /* Generic.Subheading */
+.codehilite .gt {
+    color: #04d;
+} /* Generic.Traceback */
 .codehilite .kc {
-    color: #0550ae;
+    color: #008000;
+    font-weight: bold;
 } /* Keyword.Constant */
 .codehilite .kd {
-    color: #cf222e;
+    color: #008000;
+    font-weight: bold;
 } /* Keyword.Declaration */
 .codehilite .kn {
-    color: #cf222e;
+    color: #008000;
+    font-weight: bold;
 } /* Keyword.Namespace */
 .codehilite .kp {
-    color: #cf222e;
+    color: #008000;
 } /* Keyword.Pseudo */
 .codehilite .kr {
-    color: #cf222e;
+    color: #008000;
+    font-weight: bold;
 } /* Keyword.Reserved */
 .codehilite .kt {
-    color: #cf222e;
+    color: #b00040;
 } /* Keyword.Type */
-.codehilite .ld {
-    color: #953800;
-} /* Literal.Date */
 .codehilite .m {
-    color: #953800;
+    color: #666;
 } /* Literal.Number */
 .codehilite .s {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String */
 .codehilite .na {
-    color: #953800;
+    color: #687822;
 } /* Name.Attribute */
 .codehilite .nb {
-    color: #953800;
+    color: #008000;
 } /* Name.Builtin */
 .codehilite .nc {
-    color: #0550ae;
+    color: #00f;
+    font-weight: bold;
 } /* Name.Class */
 .codehilite .no {
-    color: #0550ae;
+    color: #800;
 } /* Name.Constant */
 .codehilite .nd {
-    color: #953800;
+    color: #a2f;
 } /* Name.Decorator */
 .codehilite .ni {
-    color: #116329;
+    color: #717171;
+    font-weight: bold;
 } /* Name.Entity */
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-    color: #8250df;
+    color: #cb3f38;
+    font-weight: bold;
 } /* Name.Exception */
 .codehilite .nf {
-    color: #0550ae;
+    color: #00f;
 } /* Name.Function */
 .codehilite .nl {
-    color: #953800;
+    color: #767600;
 } /* Name.Label */
 .codehilite .nn {
-    color: #24292f;
+    color: #00f;
+    font-weight: bold;
 } /* Name.Namespace */
-.codehilite .nx {
-    color: #8250df;
-} /* Name.Other */
-.codehilite .py {
-    color: #0550ae;
-} /* Name.Property */
 .codehilite .nt {
-    color: #116329;
+    color: #008000;
+    font-weight: bold;
 } /* Name.Tag */
 .codehilite .nv {
-    color: #953800;
+    color: #19177c;
 } /* Name.Variable */
 .codehilite .ow {
-    color: #8250df;
+    color: #a2f;
+    font-weight: bold;
 } /* Operator.Word */
 .codehilite .w {
-    color: #24292f;
+    color: #bbb;
 } /* Text.Whitespace */
 .codehilite .mb {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Bin */
 .codehilite .mf {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Float */
 .codehilite .mh {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Hex */
 .codehilite .mi {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Integer */
 .codehilite .mo {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Oct */
 .codehilite .sa {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Affix */
 .codehilite .sb {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Backtick */
 .codehilite .sc {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Char */
 .codehilite .dl {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Delimiter */
 .codehilite .sd {
-    color: #0550ae;
+    color: #ba2121;
+    font-style: italic;
 } /* Literal.String.Doc */
 .codehilite .s2 {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Double */
 .codehilite .se {
-    color: #0550ae;
+    color: #aa5d1f;
+    font-weight: bold;
 } /* Literal.String.Escape */
 .codehilite .sh {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Heredoc */
 .codehilite .si {
-    color: #0550ae;
+    color: #a45a77;
+    font-weight: bold;
 } /* Literal.String.Interpol */
 .codehilite .sx {
-    color: #0550ae;
+    color: #008000;
 } /* Literal.String.Other */
 .codehilite .sr {
-    color: #0550ae;
+    color: #a45a77;
 } /* Literal.String.Regex */
 .codehilite .s1 {
-    color: #0550ae;
+    color: #ba2121;
 } /* Literal.String.Single */
 .codehilite .ss {
-    color: #0550ae;
+    color: #19177c;
 } /* Literal.String.Symbol */
 .codehilite .bp {
-    color: #953800;
+    color: #008000;
 } /* Name.Builtin.Pseudo */
 .codehilite .fm {
-    color: #0550ae;
+    color: #00f;
 } /* Name.Function.Magic */
 .codehilite .vc {
-    color: #953800;
+    color: #19177c;
 } /* Name.Variable.Class */
 .codehilite .vg {
-    color: #953800;
+    color: #19177c;
 } /* Name.Variable.Global */
 .codehilite .vi {
-    color: #953800;
+    color: #19177c;
 } /* Name.Variable.Instance */
 .codehilite .vm {
-    color: #953800;
+    color: #19177c;
 } /* Name.Variable.Magic */
 .codehilite .il {
-    color: #953800;
+    color: #666;
 } /* Literal.Number.Integer.Long */
-.codehilite .highlight {
-    background: #fff;
-    color: #24292f;
-}
+
+/* End Pygments Default Colors */
 
 %dark-theme {
+    /* Begin Pygments Monokai Styles */
     .codehilite .hll {
-        background-color: #6e768182;
+        background-color: #49483e;
     }
 
     .codehilite .c {
-        color: #8b949e;
+        color: #959077;
     } /* Comment */
     .codehilite .err {
-        color: #ff7b72;
+        color: #ed007e;
+        background-color: #1e0010;
     } /* Error */
+    .codehilite .esc {
+        color: #f8f8f2;
+    } /* Escape */
+    .codehilite .g {
+        color: #f8f8f2;
+    } /* Generic */
     .codehilite .k {
-        color: #ff7b72;
+        color: #66d9ef;
     } /* Keyword */
     .codehilite .l {
-        color: #ffa657;
+        color: #ae81ff;
     } /* Literal */
     .codehilite .n {
-        color: #d2a8ff;
+        color: #f8f8f2;
     } /* Name */
     .codehilite .o {
-        color: #7ee787;
+        color: #ff4689;
     } /* Operator */
+    .codehilite .x {
+        color: #f8f8f2;
+    } /* Other */
     .codehilite .p {
-        color: #c9d1d9;
+        color: #f8f8f2;
     } /* Punctuation */
     .codehilite .ch {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.Hashbang */
     .codehilite .cm {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.Multiline */
     .codehilite .cp {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.Preproc */
     .codehilite .cpf {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.PreprocFile */
     .codehilite .c1 {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.Single */
     .codehilite .cs {
-        color: #8b949e;
+        color: #959077;
     } /* Comment.Special */
+    .codehilite .gd {
+        color: #ff4689;
+    } /* Generic.Deleted */
     .codehilite .ge {
+        color: #f8f8f2;
         font-style: italic;
     } /* Generic.Emph */
+    .codehilite .ges {
+        color: #f8f8f2;
+        font-weight: bold;
+        font-style: italic;
+    } /* Generic.EmphStrong */
     .codehilite .gr {
-        color: #ff7b72;
+        color: #f8f8f2;
     } /* Generic.Error */
     .codehilite .gh {
-        color: #79c0ff;
+        color: #f8f8f2;
     } /* Generic.Heading */
+    .codehilite .gi {
+        color: #a6e22e;
+    } /* Generic.Inserted */
+    .codehilite .go {
+        color: #66d9ef;
+    } /* Generic.Output */
+    .codehilite .gp {
+        color: #ff4689;
+        font-weight: bold;
+    } /* Generic.Prompt */
     .codehilite .gs {
+        color: #f8f8f2;
         font-weight: bold;
     } /* Generic.Strong */
     .codehilite .gu {
-        color: #79c0ff;
+        color: #959077;
     } /* Generic.Subheading */
+    .codehilite .gt {
+        color: #f8f8f2;
+    } /* Generic.Traceback */
     .codehilite .kc {
-        color: #79c0ff;
+        color: #66d9ef;
     } /* Keyword.Constant */
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-        color: #ff7b72;
+        color: #66d9ef;
     } /* Keyword.Declaration */
     .codehilite .kn {
-        color: #ff7b72;
+        color: #ff4689;
     } /* Keyword.Namespace */
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-        color: #ff7b72;
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     } /* Keyword.Pseudo */
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-        color: #ff7b72;
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     } /* Keyword.Reserved */
     .codehilite .kt {
-        color: #ff7b72;
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     } /* Keyword.Type */
     .codehilite .ld {
-        color: #ffa657;
+        color: #e6db74;
     } /* Literal.Date */
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-        color: #ffa657;
+        color: #ae81ff;
     } /* Literal.Number */
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-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String */
     .codehilite .na {
-        color: #ffa657;
+        color: #a6e22e;
     } /* Name.Attribute */
     .codehilite .nb {
-        color: #ffa657;
+        color: #f8f8f2;
     } /* Name.Builtin */
     .codehilite .nc {
-        color: #79c0ff;
+        color: #a6e22e;
     } /* Name.Class */
     .codehilite .no {
-        color: #79c0ff;
+        color: #66d9ef;
     } /* Name.Constant */
     .codehilite .nd {
-        color: #ffa657;
+        color: #a6e22e;
     } /* Name.Decorator */
     .codehilite .ni {
-        color: #7ee787;
+        color: #f8f8f2;
     } /* Name.Entity */
     .codehilite .ne {
-        color: #d2a8ff;
+        color: #a6e22e;
     } /* Name.Exception */
     .codehilite .nf {
-        color: #79c0ff;
+        color: #a6e22e;
     } /* Name.Function */
     .codehilite .nl {
-        color: #ffa657;
+        color: #f8f8f2;
     } /* Name.Label */
     .codehilite .nn {
-        color: #c9d1d9;
+        color: #f8f8f2;
     } /* Name.Namespace */
     .codehilite .nx {
-        color: #d2a8ff;
+        color: #a6e22e;
     } /* Name.Other */
     .codehilite .py {
-        color: #79c0ff;
+        color: #f8f8f2;
     } /* Name.Property */
     .codehilite .nt {
-        color: #7ee787;
+        color: #ff4689;
     } /* Name.Tag */
     .codehilite .nv {
-        color: #ffa657;
+        color: #f8f8f2;
     } /* Name.Variable */
     .codehilite .ow {
-        color: #d2a8ff;
+        color: #ff4689;
     } /* Operator.Word */
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+        color: #f8f8f2;
+    } /* Punctuation.Marker */
     .codehilite .w {
-        color: #c9d1d9;
+        color: #f8f8f2;
     } /* Text.Whitespace */
     .codehilite .mb {
-        color: #ffa657;
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     } /* Literal.Number.Bin */
     .codehilite .mf {
-        color: #ffa657;
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     } /* Literal.Number.Float */
     .codehilite .mh {
-        color: #ffa657;
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     } /* Literal.Number.Hex */
     .codehilite .mi {
-        color: #ffa657;
+        color: #ae81ff;
     } /* Literal.Number.Integer */
     .codehilite .mo {
-        color: #ffa657;
+        color: #ae81ff;
     } /* Literal.Number.Oct */
     .codehilite .sa {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Affix */
     .codehilite .sb {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Backtick */
     .codehilite .sc {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Char */
     .codehilite .dl {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Delimiter */
     .codehilite .sd {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Doc */
     .codehilite .s2 {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Double */
     .codehilite .se {
-        color: #79c0ff;
+        color: #ae81ff;
     } /* Literal.String.Escape */
     .codehilite .sh {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Heredoc */
     .codehilite .si {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Interpol */
     .codehilite .sx {
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     } /* Literal.String.Other */
     .codehilite .sr {
-        color: #79c0ff;
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     } /* Literal.String.Regex */
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+        color: #e6db74;
     } /* Literal.String.Single */
     .codehilite .ss {
-        color: #79c0ff;
+        color: #e6db74;
     } /* Literal.String.Symbol */
     .codehilite .bp {
-        color: #ffa657;
+        color: #f8f8f2;
     } /* Name.Builtin.Pseudo */
     .codehilite .fm {
-        color: #79c0ff;
+        color: #a6e22e;
     } /* Name.Function.Magic */
     .codehilite .vc {
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     } /* Name.Variable.Class */
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     } /* Name.Variable.Global */
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     } /* Name.Variable.Instance */
     .codehilite .vm {
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     } /* Name.Variable.Magic */
     .codehilite .il {
-        color: #ffa657;
+        color: #ae81ff;
     } /* Literal.Number.Integer.Long */
-    .codehilite .highlight {
-        background: #0d1117;
-        color: #c9d1d9;
-    }
 }
 /* stylelint-enable color-no-hex, no-duplicate-selectors */