I believe Canon was the first to do it: use white to identify a photographic product, especially some of its lenses. Now Pentax takes it further and splashes white onto one of its DSLR models.
The original PENTAX K2000 (also known as the K-m in some parts of the world) DSLR arrived on the scene late [...]
Post from: Digital Photography School – Photography Tips.
PENTAX K2000 (K-m) White DSLR Review