1. The colour simulator (with matching for a few lens models) for the K-50:-
http://www.camera-pentax.jp/k-50
Meanwhile, this is the classic desert military colour that I have made:-
Note that the DA"L" 18-135 WR lens should be a typo. From the photo of the lens, it should be the old DA 18-135 WR lens, just!
2. Next, there is also a Q7 colour simulator:-
http://www.camera-pentax.jp/q7
Note that now the P-Q 01 prime lens has 20 colours, including the original silver one.
3. The Q7 can be bought as a set. This "special edition" set is made available at the Japanese home market only, for a total of 1,000 sets:-
http://www.pentax.jp/japan/news/2013/20130613_6.html
Remark: EXIF shows that the above official picture was taken with a Canon TS-E 90mm/2.8 lens on a Canon DSLR!! :-o ;-p
So, one can get the Q7 with the 01 to 07 lenses altogether at one-go! A P-Q bag as shown in the above will be bundled as the gift.
4.The P-Q 07 "mount shield lens" is officially announced:-
http://www.pentax.jp/japan/news/2013/20130613_5.html