I've got test cyp from Paddock Laboraties that's clear. It's a prescription that my doctor wrote. Most of the 10 ml vials I get, there will be a yellowish tint to it. My guess would be that it would depend on the lab manufacturing the masteron.
I would say there is always a standard or what you see the most... For example:
deca - little darker than test
tren - golden brown or orange
test - light urine color ( that's all I could think of lol)
My point is that if you ordered from 10 different sources you should see somewhat of a consistency in color... I realize that SOME may be different but yiu' get what I'm saying.