Similar to what mentioned in 2e196fd5d3
previous sea-green colour didn't meet the WCAG AA standard
guidelines for color contrast. This changes meets WCAG AAA
standard.
Message_edit.js had a bug where if the inline topic_edit failed, it
would not show an error because it attempted to make a look up for
the message_id as though it were a message row edit, which would not
work. That was changed in a refactor, which made it apparent that
there was no error being rendered at all. This commit corrects it by
rendering the error, it also adds some styling to ensure the error
message is displayed inline and it makes a change to the template so
the error is rendered before the spinner.