Can't save paint color fine tunes in XBox 360 vsn. of FH2

FH2, I can’t save color fine tunes; after pressing save and ok buttons, when I leave fine tune screen, car reverts back to the preset color. Anyone had this issue in XBox 360 version; any solutions or is it a programming error?

Do you have a HDD on your X360 or just the slim with the 4GB internal memory?