Light text on dark looks too bold with Apple's subpixel antialiasing

As I said before, I do like the effect of Apple's subpixel font antialiasing on my LCD monitor. There's a glaring exception, though: it makes light text on dark backgrounds look too bold. I'm not sure exactly what's going on, but I think it's an actual character-rendering bug; I may complain about it to Apple if I can characterize it better.

( example with pictures )