Language color scheme readability

I have been working mostly with rust lately, and I noticed that, while most of the coloring is okay, the theme doesn't color lifetime specifiers, generic type parameters, or function names, so it's much harder to read than it is in your other IDE's, where they all stand out.

In my opinion, this is much easier to read

than this:

It would be nice to be able to customize the colors for all these things like you can in other JB IDEs, but it would be nice to at least have options with more specificity