background filter CIConstantColorGenerator parameters inputColor type binding value color type filter foreground filter CIConstantColorGenerator parameters inputColor type binding value color type filter filter PICompositingFilter parameters inputBlendMode type mode value softLight inputIntensity type number value 0.5 type filter matte filter CIGaussianBlur parameters inputRadius type number unit pixels value 3 type filter filter CIGammaAdjust parameters inputPower type number value 2 type filter filter CIMultiplyBlendMode parameters type filter parameters color type color value -0.3160670564 0.8170661267 0.8695716097 1 version 5