These days I run HIGH CONTRAST (ie, getting as old as Methuselah, rheumy eyes, bent back,and all that happy stuff).
I do have two systems for observation purposes ... my high contrast (black screen, white text, orange unvisited, bright green visited) and that's it) and a "regular" where I can test out/view color options for presentation purposes.
Pastel/transparent/half-screen are my defaults for sidebars/headers (no images) and limited palettes, verging on monochrome... some are blues, some are greens, and only for the rowdy stuff reds verging on orange-yellow.
From time to time I scan the web on the "color" system and have noticed an increasing LACK of color. Could it be that CONTENT and not graphic design is coming back on vogue?
Then again, I have a rather limited taste on topic/subject when personally surfing, so I might have missed out on the greatest hits.
Do you colorize your web? Do you seek it out?
This inquiring mind wants to know.