I know this question is ages old, but thought I'd add my two cents in case anyone else stumbles across the question.
I've got an RGBLED on a Dell Studio XPS, probably the same or similar to the OP. I found that if I look at the screen with polarised sunglasses on (the ones that block glare off water - good for fishing), then the screen looks very pink or green, depending on the angle I hold my head. For normal monitors I don't get any colour shift but the screen looks completely black if I tilt my head 90 degrees.
Hope that's of interest to someone!