[enuddleyarbl]

I'm actually in the process of trying to figure out how to do change that color scheme. As I mentioned above, I don't think that Live CSS panel looked that way yesterday and I don't know what changed.

EDIT: Well, the only way I could get a reasonable color scheme in Calibre was to change to a Light theme in both the main Calibre program and in the Editor (without spending a lot of time trying to figure out how to set up a custom theme). All the Dark themes have some odd colors and the Live CSS and File Preview panes follow the Dark theme regardless of my setting a light theme in the editor. But, with a Light theme, that color code isn't present in the Live CSS pane. As @Karellen mentioned, I guess that code's there for displaying within the editor. But, it seems odd that code would appear in the Live CSS pane merely for the editor's purpose and not the book's.