Getting user's "URL Hyperlink" colour.

I've been trying to add hyperlink like functionality via an extension, and I wanted my classifier to have the same colour as the existing "URL Hyperlink" item. While I could get "Keyword" colour using IVsFontAndColorStorage's GetItem having opened the FontsAndColorsCategory.TextEditor category, using "URL Hyperlink" or any variation I tried never returned anything. What am I doing wrong? Should I be looking at a subcategory, or something else entirely?