refactor: re-add removed colour attributes (#5001)
refactor: re-add removed colour attributes (#5001)

Reverts https://github.com/github/linguist/pull/3280
erkyrath/linguist,erkyrath/linguist,erkyrath/linguist,christop/linguist,github/linguist,github/linguist,erkyrath/linguist,github/linguist,christop/linguist,github/linguist