How Can I Change Product Gallery?

Hello, My theme has a feature that changes its gallery according to the color variation of the product. But it only works for variation products. I use a custom calculation method on products. So I converted my product to simple product. But my product has color variations. And there are 5 product images for each color variation. I add color option with uni cpo 4 . there is only the section that changes the main image in the suboptions panel. There is no place to change the product gallery. What will I do?