public void setBackground(float x, float y, float z, float a) {
		gl.glClearColor(x / 255, y / 255, z / 255, a / 255);
	}
public void setBackground ( float x , float y , float z , float a ) { gl . glClearColor ( x / 255 , y / 255 , z / 255 , a / 255 ) ; }
Sets the background to a RGB and alpha value.

@param x
The R value of the background.
@param y
The G value of the background.
@param z
The B value of the background.
@param a
The alpha opacity of the background.