How to control or edit miniatures (SWATCH images) that Amazon uses for variation themes? For example, color. At the moment, it looks like Amazon takes random main (or SWATCH) images, and it even doesn't take images from the proper color group.

We have group of products with black and white color. Instead of some main or SWATCH Image from the proper group, Amazon shows random images from the black color group for white color miniature.

Is there a way to control it? What are the rules behind the miniatures that pop up with listings that have variation products?

You can answer in German, that is fine by me. I'm just better and quicker at writing in English. I hope that is not a problem.

EDIT: Found a solution, but not here, obviously. I'm posting it in case someone will see it:

Child ASINs have certain kind of images called SWATCH. To have proper miniatures on color variations, I needed to upload images with proper color maximum 500x500px (with higher resolution it won't work). Basically, if one have two colors, choose two images for those colors and update proper child ASINs SWATCH images with the chosen image. Oftentimes, some cropped image is used for that.