The main change is the movement of color defintions to the Lab Color Space, which allows better manipulation and comparative equality in perception of the lightness of different colors. Colors were converted from the zenburn theme and slightly adjusted in lightness.
All/most bold attributes were removed as well, as these change the lightness perception. Development of the original zenburn theme is tracked as far as appropiate, last merged commit was eaaba83ce08e8afff5f4c8dd6be0921ef34f9cef. The theme is made to be used with the rainbow-identifiers package, please enable this. License GPL 3