Use this plugin to create a CSV that you can then upload to a collection in wix code. In this CSV, have a field that identifies which image belongs to which car and color. If you can extract this information from the image name, thats the best option. If not, it will be manual to some degree.
Once you have a collection, lets say that looks something like -
Ford Escort, red, url…
Hunda CRV, blue, url…
Upload the data, and you should see all the images in the database.