param = createGrayParam(redPalette, greenPalette, bluePalette, alphaPalette);
param = createGrayParam(redPalette, greenPalette, bluePalette, alphaPalette);
param = createGrayParam(redPalette, greenPalette, bluePalette, alphaPalette);
param = createGrayParam(redPalette, greenPalette, bluePalette, alphaPalette);