If you sit a piece of white paper down, and let the LEDs be the only light source, then you take a picture of the paper with the lights in the frame, and white balance on the paper, the lights will look white. (That'll also tell you the approximate color temp of the lights.)
Your eyes do the same thing, if the primary light is coming from the LED strips they'll look white. And if they match the rest of the lights around you'll still think they look white. What I'm getting at is when you have a mixed light source, the dominate color will appear white, and the others will look blue or red shifted.
