The incredible fading iPod mini

Following on from our post yesterday about the
lavender iPod mini, Cabel Sasser sent us this pic he snapped at the Apple Store in Los Angeles:

I took this picture at the Apple Store in Los Angeles. The darker pink strip along the bottom? That's where the
iPod Mini sits in the Dock — and is covered from light most of the day. The picture doesn't really do it justice —
the difference in color was quite significant between the bottom bit and the top bit.

We'd never heard of this being a problem before, anyone else notice anything similar?