SO WHY DOES THIS SCAM SITE ALWAYS HAVE MORE REDS THAN GREENS PLAYS? I HAVE WAGERED MORE THAN 10 BTC AND THE FUCKING REDS ARE ALWAYS AND I MEAN ALWAYS MORE THAN THE GREENS. WAY MORE! CARE TO EXPLAIN?

It's nothing too unusual about freak bad luck, after all someone has to be the unlucky 1-in-a-million case.
But fortunately PrimeDice provides you with the tools to check if you're just unlucky or were cheated. Give it a read here:
https://primedice.com/verifyThe simple way to check is before you start gambling save in a notepad the "server seed hash", then set your own custom client seed (and write that down too). Once you're finished playing, hit the reveal server secret button. Copy and paste that server seed into DiceSite's excellent tool:
http://dicesites.com/primedice/verifierAnd make sure the results match. Before you do that for real, claim a few free bits from the PrimeDice faucet and attempt this procedure and make sure you can see how it works.
Honestly, verifying bets is satisfying. You can remove all the doubts from your mind about the site being fair or not. =)
All that the provably fair thing proves is that there was no interference from the house to absolutely guarantee that the house would win any particular bet. The problem is that 'fair' is such an arbitrary term. In the long run, the player will always lose and of course sometimes it doesn't take that long. Well, actually, I'd say that it never really takes long at all. The key to coming out ahead at gambling is walking away when you are ahead and minimizing and reducing the exposure to risk. Any time you make a wager you expose yourself to risk. But back on the 'provably fair' angle... people tend to not understand the "kelly" system or how that mixes with other factors rather it be bet size or any other multitude of factors that go into these algorithms designed to make the house profitable.