Revert "Change Nim's colour to better match the logo (#4866)" (#4871)
Revert "Change Nim's colour to better match the logo (#4866)" (#4871)

This reverts commit a2917b00aadd9c27d8d078cbacefbf551fea8df4.
github/linguist,sebgod/linguist,sebgod/linguist,christop/linguist,github/linguist,erkyrath/linguist,erkyrath/linguist,sebgod/linguist,github/linguist,erkyrath/linguist,sebgod/linguist,christop/linguist,erkyrath/linguist,github/linguist