LensCoat does make camo covers for Sigma and Tamron lenses that are available for the Pentax mount but nothing "specific" for Pentax lenses.
Other Lenses - LensCoat
That said, my experience is that sometimes you just have to study other lens dimensions to see if they are close enough to a lens that you covered. For example, I also shoot with Canon gear and LensCoat didn't make a lens cover for my specific Canon lens but they made one for a Nikon lens that has almost identical measurements to my Canon lens. I bought the Nikon cover and it fits the lens almost perfectly (just blocks the AF/MF switch on the lens body).
This won't help for the camera body, but it will potentially help with covering the lens. If you want to really be covered for wildlife photography then you need something like this:
Other Accessories - Kwik Camo Photography Blind - Realtree Max4 LensCoat