When comparing Material Theme for Notepad++ vs Solarized Dark, the Slant community recommends Solarized Dark for most people. In the question“What are the best color themes for text editors?” Solarized Dark is ranked 14th while Material Theme for Notepad++ is ranked 48th. The most important reason people chose Solarized Dark is:
There are ready-made packages for Vim, IntelliJ, Emacs, iTerm, etc. If your app isn't supported the website explains clearly what colors are used, so it should be easy to wrap up your own.
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Pros
Pro Based on popular themes
The theme is a port of another popular Sublime Text theme and hence is tried and tested
Pro Actively developed
The theme is quite new and is in active development.
Pro It's free
Pro Improves Notepad++'s user interface
Greatly improves the Notepad++ UI by using clean and modern colors.
Pro There are versions for a lot of applications or it's easy to make your own
There are ready-made packages for Vim, IntelliJ, Emacs, iTerm, etc. If your app isn't supported the website explains clearly what colors are used, so it should be easy to wrap up your own.
Pro It seems that is has been given the most thought
Judging from the description that has been given by the author, it seems that this color scheme has been designed with huge background knowledge about colors and relations between them.
Pro Works well with multiple fonts
Since Solarized has pretty good color separation it's easier to distinguish both thin and bold fonts.
Cons
Con Too much blue
People caring about the color intensity in their screens, will notice that this theme is not useful for night use. If you use software like Flux to dim the blues in your screen this theme loses its enchant.
Con Low contrast
Comments for example, have very low contrast against the background which makes it harder to read.
Con Vanilla version doesn't work with htop
Half of the usernames in htop have the same color as the background.
One has to use a patched version of htop.