Highlight type parameters consistently

[RunDevelopment]

Search Terms

themes, type parameter, typeparam

Problem

Type parameters are highlighted in a nice violet color by the built-in themes. However, not all occurrences of type parameters are highlighted:

As you can see, S and O are not highlighted at their declaration site (withInitial<S, O>) and in the "Type parameters" section.

Suggested Solution

Highlight type parameters at their declaration site:

and maybe in the "Type parameters" section:

Frankly, I'm split on the "Type parameters" section highlighting. It's nice to be consistent but it also looks a little strange. Maybe it's a tad too colorful?