A problem with odd colored gun stuff is they trend to unpopular.
I've the jones for a CAV-15 Mk II lower from GWACS in Zombie Green.
It's only a bit more than $200 but other things keep coming up, or it's not as high in the wants list as other things.
I suspect that the green will be going away soon since the zombie craze is running out.
One reason for my delaying was the lack of a zombie green handguard to match it.
It appears that Magpul will finally be releasing sand colored furniture this year and I've got a good formula for that green to dye them.
Now I just need the money to coalesce.