I'm not too sure about Pantac Khaki. If you do go with an all Khaki uniform be sure the top and bottom match. I know for a fact Truspec khaki looks pink. And it will not match with something like 5.11 khaki.
Here is a colour comparison.
My team usually rolls out with truspec combat shirts and 5.11 Khaki pants. Colour looks horrible.
Doesn't look too bad here. This is the closest to "Special Forces" we get.