Cyanide includes settings for various tab heights, folder icon sizes, and UI contrast. To enable Cyanide in Sublime Text, open up your user preferences file and replace the theme and color_scheme directives with these:
Predawn is actually a new and improved, renamed version of Flatland-Alt, but still sticks with the dark interface. Here’s how Predawn describes itself in it’s GitHub repo.
Predawn is a minimal Sublime Text theme and a syntax color scheme. It was originally just a slightly tweaked version (called Flatland-Alt) of the Flatland theme, which itself is a flat reworking of Soda. I decided to keep going with cusomization and rework the entire theme. But I owe a lot to Flatland and Soda. Thanks guys!
Predawn can be installed via Package Control and activating the theme is pretty standard: