Account for half-length grey hex colors

[ErikBoesen]

It's possible to specify some grey colors (such as #ccc) as synonyms for six-character greys (#cccccc). (You can also append an alpha value to the end.) In ThemeCreator, this works without issue. However, this causes issues with (at least) vim, which fails to resolve these colors.

I actually prefer to write color hexes this way sometimes. I think it would be nice if ThemeCreator could detect if the user has used half-length greys and simply expand it to the standard for editors like vim, which, unlike editors like Atom, don't render colors through web technologies.

I'd love to help resolve this issue if there's anything I can do to assist you.