[Feat] Add more color to types file

[cuzik]

Hi,

I'm proposing an improve of the standard colors.

• [x] Add more basic colors (shade of gray)
• [x] Add more extra colors

[stephanemagnenat]

Thank you for your PR!

I'll be happy to merge it, following two small changes:

• Please remove the whitespace-only changes.
• When a color is composed of two words (such as "light blue"), blue use the camelCase convention used elsewhere in Enki; (example lightBlue).

[cuzik]

Hi, I will gladly make the changes

[stephanemagnenat]

Merged, Thank you!