People tend to chronically underlight indoor rooms anyway, but ignore it because of the light hue.

When you switch to CFLs, an interesting experiment is to replace it with a light with the half the wattage of your current one (not an "equivalent to something" wattage). In most cases this means you give yourself about 100-200W of incandescant equivalent output, and in every case I've had someone do it they've been amazed at how much brighter the room is (and been happy about that).