Set openGL color with 0xff112233 type value.

gistfile1.txt

public static float[] hexToFloat(int colourToConvert) {
		float red = (float) (colourToConvert >> 16 & 255) / 255.0F;
        float green = (float) (colourToConvert >> 8 & 255) / 255.0F;
        float blue = (float) (colourToConvert & 255) / 255.0F;
        
		return new float[] {red, green, blue};
	}
	
	public static void glColorInt(int hexColour) {
		float[] rgbValues = hexToFloat(hexColour);
		GL11.glColor3f(rgbValues[0], rgbValues[1], rgbValues[2]);
	}