When comparing Zenburn vs Molokai, the Slant community recommends Molokai for most people. In the question“What are the best VIM color-schemes?” Molokai is ranked 2nd while Zenburn is ranked 11th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Exceptionally easy for your eyes
Pro A battle-tested solution backed by decades of happy use
Pro Low contrast color theme
The low contrast will reduce eyestrain.
Pro Ported to a lot of apps and software
Pro Looks great
Pro One of the most common dark themes
Default for Sublime Text, avaialble on IntelliJ products and Eclipse via plug-in. Usually ranked in top 3 of highest downloaded theme for a IDE.
Pro Strong enough contrast
Without being fully black on white (which is good on modern already very contrasted screens) it remains pretty dark compared to many alternatives; making it more readable.
Pro Easy to install with Vundle
Cons
Con Quite low in contrast
While the low contrast reduces eye strain, some people may prefer the added legibility of a higher contrast.
Con That pink
The pink color is too vibrant if compared with others. It pops out from context and may blend with red errors in some editors.