Random colour

RandomColor.m

// Sometimes you just need a random colour! I think I got this from apress's Beginning iOS Development book, kudos to them.  
  CGFloat hue = ( arc4random() % 256 / 256.0 );  //  0.0 to 1.0
  CGFloat saturation = ( arc4random() % 128 / 256.0 ) + 0.5;  //  0.5 to 1.0, away from white
  CGFloat brightness = ( arc4random() % 128 / 256.0 ) + 0.5;  //  0.5 to 1.0, away from black
  UIColor *color = [UIColor colorWithHue:hue saturation:saturation brightness:brightness alpha:1];