Adding Images to Variants in Shopify

This job has 2 parts.
1. I need someone to go through my products on Shopify and add pictures to the color variants. All of the pictures are already in the product page. For example, there is a variation Red- and you should find the main image for red in the selection of product images and add it to the red variant. There are over 300 SKUs to do this for.

2. There will be missing colors. We need someone to track which color variants are missing images.