I've attempted to consistently limit myself to three primary colors to style similar semantic elements across languages, while remaining easy on the eyes.
Different shades and subtle color variants are used to create a visual hierarchy that's quick to read, and easy to understand.
This theme is still a work in progress though actively maintained. Suggestions are always welcome and highly appreciated.
Also available: minimal-syntax-dark
I've created this theme for myself and from personal experience. It is/will be optimised for the languages I regularly use:
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.