Add image to all products in Category

Hey guys, I know this may come under a WooCommerce issue but at the same my issue kinda relates to the Function of WordPress.

Basically, I have a WooCommerce store with Over 1000 Products.
What im trying to do is add an Image to all products under 1 Category, Or at least assign an Image to a Multiple amount of Products.

Example, Have a Picture of a red Shirt for all products under the category “Red Shirts” And a Image of a Blue shirt for all products under the category “Blue Shirt”

I’ve tried Selecting multiple products with the “checkbox” and selecting “Edit” in bulk actions but the only thing i cant change is the Image, I can give everything the same Price and stuff like that but cant assign a image to a Bulk selection.

And it would seriously save us hours!

Hope someone has a Plugin or a Way of doing this.

Thanks Guys