This doesn't really bother me, especially if they're going after the lunatics on the road.
There's value to identifiable CHP as they act as a reminder and a deterrent just by their presence.
At the same time, for those on the lookout for them, hiding in plain sight has advantages.
In my travels around here, I see very little speed enforcement. I'm doing 80 (along with most others), and still get my doors blown off by others. I don't do 80 to do 80 per se, but just more to keep with the flow (no really!). So it honestly wouldn't bother me that much to tone down overall traffic velocity.