Display images when categorized by topic

Is there a way to add a background to your shop images when they’re being displayed by topic? They don’t default to model images (which would be even better than a background), so when you have a design in white you can’t see it because it’s a white background/PNG. I don’t want to change the entire background of my website, I like the clean look as it is.

To see what I’m talking about: https://madebymowgli.myspreadshop.com/collections

Thanks in advance!

Hi!
In the design settings, under metadata, you can choose whether it will be displayed against a white or grey background:

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If you prefer a different colour, you can set it to the colour of the product in page settings->product list page:

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You can also choose a custom colour for your products in shop settings-> appereance:

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