RGB(FFFFFF)转255:255:255

NSString *color = model.display_color;

long colorLong =
strtoul([color cStringUsingEncoding:NSUTF8StringEncoding],
0, 16);

// 通过位与方法获取三色值

int R = (colorLong &
0xFF0000 )>>16;

int G = (colorLong &
0x00FF00 )>>8;

int B = colorLong &
0x0000FF;

UIColor *wordColor = [UIColor
colorWithRed:R/255.0
green:G/255.0 blue:B/255.0
alpha:1.0];