All of a sudden, after closing and reopening Visual Studio 2005, ReSharper 2.5 syntax coloring has reverted to its defaults, "forgetting" my custom settings. When trying to reapply my custom settings, I found that the ReSharper-related items are missing from Tools/Options/Fonts and Colors (this might be related to RSRP-36910). ReSharper identifier highlighting is enabled under ReSharper/Options/Highlighting, disabling and re-enabling or/and restarting Visual Studio does not get them back.

I can import my custom settings via Tools/Import and Export Settings, and so and so far, it's working again, but the items are still missing from Tools/Options/Fonts and Colors.