There should be some color theme presets.
I used to like tweaking all my colors myself, but now I trust the text editor developers that give me 2-3 color theme presets to choose from. I especially like dark color schemes to preserve my eyesight for long hours of coding. These presets would also apply to syntax highlighting so that every color scheme is usable with all languages.
What is needed is a theme dropdown to choose from, and a "Customize" button that gives you access to advanced syntax-highlighting color editor.