Funnily enough, I saw this while I was showing the gf what the metallic blue looks like as she will be picking it up later this month from her cousin in Miami and bringing it back to Canada saving me taxes on this end.
First thing I thought of was what color to change the keys to match.
If the blurb is to be believed, every pattern is different and you can see it in the closeup pictures of the logo on all three links.
To cater more to gamers who are the target market, they also have media keys to control volume, etc.
Awesome and they are available in TKL as well!
Sorry, cant seem to post links but if you go to the Diatec main page, you can see it under the product listing section.