New Post: Colorize and transparency

I was using an earlier version of Magick.net and just updated to the latest. Colorize in this version seems to work differently. Before it affected only the areas of the image that are not transparent, now it seems to affect both the opaque and transparent areas equally. Below is the line of code. Is there a way to have colorize only affect the non-transparent areas of an image? Thanks in advance.

MergedImage.Colorize(New MagickColor(colorRed, colorGreen, colorBlue), 100)