This code checks whether or not manual color inputs are supported in
the browser, but does so with an invalid property “!” which throws a
console.warn statement in jQuery. We change this test to a valid
“#ffffff” that works and does not throw warnings.
This allows you to select the container that the color picker should
append to and therefore be absolutely positioned in accordance with.
This still defaults to document body, which was the previously default
container to append the color picker to.