[IstuntmanI]

A color format is 0xRRGGBBAA, RR = red amount, GG = green amount, BB = green amount and AA = alpha transparency (what do you want to change), now you have FF, and you can make it transparent by setting it to any range from 00 to 99 and combinations between AA, BB, CC, DD, EE, FF (you can use AA, AB, CA, CE, etc.)