I have an image that I'm trying to pad some transparent border. But I get error: "The specified padding value is not compatible with a 3-channel image." data = Table[{45, 45, 45}, {20}, {25}]; p = Image[RawArray["Byte", data], "Byte", Rule[ColorSpace, Automatic], Rule[Interleaving, True]]; ImagePad[p, 10, Transparent] What does this error mean and how to solve it?