guitext sets colour innacurately

im trying to set a guitext color, it works for all the defaults(eg, color.green) but it seems to default to the closest main colour when i put in an RBG value

this is supposed to be orange, but it comes out yellow

         if(highScore>lastScore){
		lastscoredisplay_.color =  new Color(255,160,0,255);
             }

The Color class in Unity uses floats with values between 0.0 and 1.0. There is a Color32 class that takes values 0 to 255 that can be cast to Color.