Hidden Colors - the Mitochrome process

My abstracts are almost always created from a single image, using my (top-secret) processing method. (I have identified some few images as composites.) However, my process sometimes result in non-negligible black patches, which IMO suck the energy out of the resultant image.

So I have created a process (which I call 'mitochrome'), wherein I replace those black patches (which meet a certain criterium) with the corresponding regions (and colors) from another processed image.

LHS is the original 'hidden colors' image; RHS has the same image with the mitochrome process applied. (Notice that the LHS image has a few naturally occurring mitochromes.) What do you think?

David

Interesting!

On the subject of black in images, a mod in a forum that I used to infest absolutely abhorred jet black, as in RGB = 0,0,0. However, I could never get him to define a threshold or any criteria above which lighter "blacks" were acceptable ...