How can I merge similar color filter names into one option?

Hi.

I have many products which have special names for the color they come in, this makes the “Color” filter pretty much useless, as all of them have their own filter option. I want to be able to merge for example:

Galaxy black
Black cobra
Black carbon

etc… all into one option: Black.

Is this possible? And also, if I have a color named Black/Red, can I make it appear in both the “Black” filter option and “Red” option as well? Attaching a photo of a PLP with the filter on the side.