Error cannot allocate color none

[cool-sean]

Using terminal Vim 8.2 on Mac iTerm2.

I'm getting this error whenever opening a new file.

It look like it's related to this issue: vim/vim#1400

The error will go away if I go to colors/github-light.vim and replace all the 'none' values with 'NONE'.

[romgrk]

I don't use vim. What's the opinion of vim regarding allowing none? It seems weird that it's not allowed.