g:rainbow_comment_prefix Not Honored

[tsjordan-eng]

I can set the comment prefix in runtime by running the RainbowComment command over a pound sign (#), but if I try to set it in my vim init via vim.g.rainbow_comment_prefix = '#' the comments are not highlighted and warnings are not ignored on that line.

I can check that when during runtime with:
:let g:rainbow_comment_prefix
which does return:
g:rainbow_comment_prefix #

[g4x86]

I met the same problem here: having let g:rainbow_comment_prefix = '#' in ~/.vimrc, the comment line is still shown with colors while :echo g:rainbow_comment_prefix confirms # is set to the variable. It seems that this plugin is not actively maintained.