Support for custom `TextColor` constants and static imported methods

[jpenilla]

The new Adventure support is awesome and works great for NamedTextColors and when using the TextColor.color methods. However when statically importing these methods the support no longer functions.
Also, custom TextColor constants do not get the same gutter highlight as NamedTextColors when used.

Here is an image illustrating the difference:

(edit (unrelated): I'm also noticing that the qualified NamedTextColor.RED renders different from the same constant statically imported)

[RedNesto]

Both static imports issues are already fixed by #811.

I'll look into evaluation of user-defined color constants.

[RedNesto]

I believe this issue is completely fixed now.

[jpenilla]

I believe this issue is completely fixed now.

Can confirm! Thanks!