vim-tomorrow-theme

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I did some profiling with https://github.com/hyiltiz/vim-plugins-profile and found that vim-tomorrow-theme has a surprisingly high impact on vim's startup-time:

==========================================
Top 10 Plugins That Slows Down Vim Startup
==========================================
     1  "ExecTime"      "PluginName"
     2  52.485  "tomorrow-theme"
     3  5.741   "vim-airline"
     4  5.228   "nerdcommenter"
     5  1.929   "vim-gitgutter"
     6  1.347   "vim-sensible"
     7  1.175   "ultisnips"
     8  1.013   "supertab"
     9  0.902   "ctrlp.vim"
    10  0.649   "youcompleteme"
==========================================

while other themes like e.g. Zenburn need way less time:

==========================================
Top 10 Plugins That Slows Down Vim Startup
==========================================
     1  "ExecTime"      "PluginName"
     2  5.227   "nerdcommenter"
     3  4.772   "vim-airline"
     4  2.051   "vim-gitgutter"
     5  1.676   "Zenburn"
     6  1.383   "vim-sensible"
     7  1.197   "ultisnips"
     8  1.105   "supertab"
     9  0.927   "ctrlp.vim"
    10  0.806   "Vundle.vim"
==========================================

EDIT: Heres a result with tomasr/molokai (this time measured with bchretien/vim-profiler):

====================================
Top 10 plugins slowing vim's startup
====================================
1         5.716   vim-airline
2         2.518   vim-gitgutter
3         1.767   vim-sensible
4         1.610   molokai
5         1.596   ultisnips
6         1.510   supertab
7         1.109   ctrlp.vim
8         0.886   youcompleteme
9         0.874   vim-surround
10        0.522   vim-multiple-cursors
====================================

What makes this theme so slow?

Because for each color it sets up, it runs 20 lines of vimscript to compute the nearest terminal color from an RGB value.

Maybe someone could dig into the optimization of NLKNguyen/papercolor-theme#28 (which more or less related to this project)

Because these colors never change, the 8-bit colors that result from those functions shouldn't change, either; they could probably just be hard-coded.

This is now fixed in my active fork (jsit/vim-tomorrow-theme#3)

awesome that was so fast, thank you very much