public void setColorKey(int c1, int c2, int c3, int c4) {
		pixels = preColorPixels;
		for(int i = 0; i < pixels.length; i++) {
			int col = pixels[i];
			if(col == COLORKEY_1) pixels[i] = c1;
			if(col == COLORKEY_2) pixels[i] = c2;
			if(col == COLORKEY_3) pixels[i] = c3;
			if(col == COLORKEY_4) pixels[i] = c4;
		}
	}