change color of an image with transparent background

[alexlezam]

In another post I had seen how to change the color in .net with the MagickImage.clut method, but it is still going to be developed.
Is there any other way to change the color of the images? leaving the background transparent

[dlemstra]

If the background is fully transparent you can do image.InverseOpaque(MagickColors.Transparent, MagickColors.Purple) this will make all non transparent pixels purple.