Why does the Solarized colorscheme look different in vim than it does in iTerm2?

Question

In iTerm2, the background color looks like this:

While in Vim, the color looks like this (I'm using https://github.com/altercation/solarized):

I'd like the first version everywhere. Now, I've never understood terminal colors, but this is my setup:

• TERM is set to xterm-256color in iTerm2's preferences.

• in my vimrc, I have

  let g:solarized_termcolors=256
  set t_Co=256
  set bg=dark
  colo solarized
  

In MacVim, I see proper colors wothout any adjustment. What do I need to do?

Answer 1

The answer is to delete let g:solarized_termcolors=256 since that will tell vim to use degraded colors (see https://github.com/altercation/vim-colors-solarized#important-note-for-terminal-users)