Is this up to you or to Amazon?

[walkingupwards]

I have a question about selling on Amazon. If you have a shirt and this shirt comes in 6 different colors, you create a listing for this shirt and it has 6 different variations of colors (Red - Black - Blue - Green - Pink - Yellow).


Now after you upload a separate image for each variation, can you dictate which one of these images will appear in search results? Or does Amazon decide which picture of these will first be shown to buyers in search?


EDIT:

Did some Google searches and yeah... seems like they won't show the parent image of the listing, instead they will display a variation's image.