If a game is in Grayscale it means there is a "_" in front of the title (ex: _BLUS12345) the "_" usually indicates the game is split and won't work. But since the game works you can go to the game folder and delete the "_" in front of it.
Yes that's it exactly. I didn't even notice that but the games I moved and now have grayscale are FF XIII, Tekken 6 and Uncharted 2 which all container +4gb files. I just set payload to hermes to load therefore I said they run fine. Well you solved another mystery for me, thanks a lot mate!
Just one more thing, if I remove the '_' will the game still work? If you don't know I'll just give it a try. Many thanks!