@mekon: Agreed. When the colors don't naturally contrast against each other, it's a royal pain, especially with a thinner font. I forget which RPG it was from five or six years ago but they had this beautiful parchment style background that unfortunately their black text blended right into and it was like an instant migraine. Did it look pretty? Sure. Was it functional? Nope.
I miss big-ass JRPG size fonts from the PS1 and PS2 era. Things are slowly getting better in that regard but man, fonts are still coming in three flavors, microscopic, almost microscopic, and almost-close-to-readable.