How do I modify a highlight?

[mfiano]

I want to change the DiffChange highlight for onedark. I am able to modify the file in this repository to get correct results, but copying it before or after I load this plugin and modifying it and it uses the colors defined by this plugin. I want to make DiffChange consistent with DiffAdd and DiffDelete. DiffChange has some weird background color applied to it and it makes my unicode characters wider than Add/Delete

[mfiano]

Hmm, this issue doesn't exist if I use nvcode instead of onedark. Neither is there an inconsistency with DiffChange

[mfiano]

I'd like to use this plugin's onedark theme with the gitsigns plugin, but for some reason the signs are always white with onedark. No problems with nvcode. Haven't tried others.

Edit: It seems all of the schemes except nvcode have this issue.

[mfiano]

@ChristianChiarulli I see the difference with nvcode now. It's the only scheme with GitSigns groups added https://github.com/ChristianChiarulli/nvcode-color-schemes.vim/blob/master/colors/nvcode.vim#L219-L221

But interestingly, if I copy these to my config right after:

vim.cmd('colorscheme onedark')
vim.cmd('let g:nvcode_termcolors=256')

They are still all white. This is rather frustrating...