(Almost)Each block that would interest you contains a byte 8A to start the block, a block identifier byte to tell the game what the block is for, then data for the block which has a data type identifier and a value identifier: 

Block Identifiers 

0x0A = Face 
0xC2 = Head Tattoo 
0x0D = Hair 
0xB4 = Hat 
0xB7 = Hat Logo 
0x24 = Hat hair 
0xB3 = Glasses 
0x0B = Shirt Style 
0xB1 = Shirt Front Logo 
0xB2 = Shirt back Logo 
0x13 = Chest Tattoo 
0x14 = Back Tattoo 
0x17 = L. Arm Tattoo 1 
0x15 = L. Arm Tattoo 2 
0x1B = R. Arm Tattoo 1 
0x16 = R. Arm Tattoo 2 
0x09 = Elbow Pads 
0xBC = L. Accessory 
0xBD = R. Accessory 
0x26 = Gloves 
0xBE = Misc Items 
0x0E = backpack 
0x0C = Pants 
0x18 = left leg Tattoo 
0x19 = Right Leg Tattoo 
0x07 = kneepads 
0x08 = Socks 
0xB0 = Shoes 
0xD0 = Deck Scaling 
0xD1 = Body Scaling 
0xC4 = Head Top Scaling 
0xC7 = Face Scaling 
0xC6 = Nose Scaling 
0xC5 = Jaw Scaling 
0xC8 = Chest Scaling 
0xC9 = Waist Scaling 
0xCA = Biceps Scaling 
0xCB = Forearm Scaling 
0xCC = Hands Scaling 
0xCD = Thighs Scaling? 
0xCE = Calves Scaling 
0xCF = Feet Scaling 
0xBB = Deck Graphic 
0xBA = Griptape 



Data Type Identifiers 

0x8D = QBKey 
0x90 = 1 Byte (char) 
0x91 = 2 Bytes (short) 
0x92 = 4 Bytes (long) 



Value Identifiers 

0x1E = Dunno, always used for QBKeys 
0x1F = Hue for colors? 
0x20 = Saturation for colors? 
0x21 = Valence for colors?    <- These 3 are for colors, not sure of what each one is for 
0xA5 = X Axis Scaling 
0xA6 = Y Axis Scaling 
0xA7 = Z Axis Scaling        <- 0xA7 MIGHT BE for Y and 0xA6 MIGHT BE for Z, not sure. 

8A0A8D1E42FC381B00        <- Placing this in a female cas will put 'Dark Head 4' on it. 

^To color this all you do is add the color info DIRECTLY after the qbkey 

8A0A8D1E42FC381B901FFF9020FF9021FF922200 

Color starts at the first 0x90 and ends at that 0x92, not sure why the 0x9222 are needed but they are, for scaling info there always seems to be a 0x921A after