float b, float a) {
Tessellator tessellator = Tessellator.instance;
GL11.glDisable(GL11.GL_TEXTURE_2D);
GL11.glColor4f(r, g, b, a);
tessellator.startDrawingQuads();
tessellator.addVertex(0.0D, height, 0.0D);
tessellator.addVertex(width, height, 0.0D);
tessellator.addVertex(width, 0.0D, 0.0D);
tessellator.addVertex(0.0D, 0.0D, 0.0D);
tessellator.draw();
GL11.glEnable(GL11.GL_TEXTURE_2D);