I've had a number of images rejected for "technical quality."

Some of these, upon consideration, I agree with. Others, however, I just don't understand.

For example, I had some watercolor backgrounds that were rejected. No, they don't have even edges, but also, no pixelation or anything like that. Resolution is high, and the high res images look fine to my eyes.

I've seen other, similar images already in the catalog that look the same, yet they passed muster.

Is there a keyword like "grunge" that gives you a pass on things that aren't exactly photorealistic?

Thanks for any suggestions!