Is it proper to rate colors in art with AI

 Not really. Colors represent your emotional state. Color theory is there. But it is not logical. Value and saturation must be solid. 

Some colors I like, AI won't like. It lowers down the rating.  But it has a point, though. You must admire that point to improvise.

Colors have a direct link with your state of being. Do not copy colors. Start with only one color and see where you end up. You will know more about yourself then. People may or may not like your art. But at this stage of my life I don't give a damn.

But constantly try to improve. Growth is what nurtures your soul.  Try. Atleast try. Try harder a bit more.