The preprocessor ('#include' in C) and constants (e.g., 'NULL' in C) were orange/bold and red/bold in the original Zenburn.
Use the original zenburn colors more (at least the font-lock ones, which are the ones used across various modes). These colors are in line with the ones from https://github.com/dbrock/zenburn-el.git, commit 2b0672b.
Remove some colors that are rarely used and are very much like the existing colors.
These changes are somewhat arbitrary and do not really go with the zenburn style, but I like them.
Revert "Fixed background color for magit diff highlighting."
This reverts commit 2a985ac. `magit-item-highlight' (inherits from `highlight') has to be different from `region' because the region is relevant in the Magit status buffer. (The region can be staged etc. instead of the complete hunk.)
Fixed background color for magit diff highlighting
theme basic helm faces