This seems to be just a GUI color scheme. Not so much if you do not want to write a terminal version.
When you see that the color scheme is not working properly, you can always try it in GVim with :gui<cr> . If you look at the code, it has a GUI-only style. Here is an example line from this diagram:
hi FoldColumn gui=italic guifg=#192224 guibg=#A1A6A8
And here is the line from Molokai, which is the color scheme for both the graphical user interface and the versions of Vim:
hi FoldColumn ctermfg=67 ctermbg=16
As you can see, colors are not RGB values. cterm stands for the term color.
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