I can't set up vim colorschemes(sexy-railscast and others) with 256 colors. How to check where the problem is?
In my vimrc I have :echo has("gui") => 1
but when I added set t_Co=256
nothing happens.
Also in .~/.profile
I added: export TERM="gnome-256color"
sexy-railscasts-theme seams to be a a GUI only port and gnome-terminal isn't a GUI for Vim.
So, maybe trying gVim instead will fix your problem.