SquareGUI background color

SquareGUI-backgroundcolor.m

 UIColor* darkSquare = [[UIColor alloc] initWithRed:202.0/255.0 green:134.0/255.0 blue:68.0/255.0 alpha:1.0];
 UIColor* lightSquare = [[UIColor alloc] initWithRed:255.0/255.0 green:206.0/255.0 blue:158.0/255.0 alpha:1.0];    

    int y =(int) (self.offset/8)  +1;
    
    if ( (self.offset + y  ) % 2 == 0) {
        self.backgroundColor = lightSquare;
    } else {
        self.backgroundColor = darkSquare;
    }