The documentation on each display item in Visual Studio's Environment options for Fonts and Colors is lacking. There is a documentation page on msdn, but even this is incomplete (not all display items are listed), and contains limited descriptions. This makes it difficult for those that like to customize their code editor styling to understand which items they need to manipulate. The lack of a search function also further complicates things.
The main question which would answer this question is, is there more extended documentation on this available somewhere?
Since I highly doubt this (at least my search efforts have failed me thus far), I suggest to start bundling more elaborate documentation where needed (complicated display items) posted as answers to this question. It is encouraged to add screenshots so the visible impact is instantly visible.