Shopify - modifying background color for color option in product page

Currently I am using the shopify solution. - If you visit my website, then you will understand what I am saying. Right now, as a default mode, the actual color automatically shows up if I set up "Red", "Black", "White" or all the simple colors, as a color variant(option). But I want to choose a certain color option for certain products since many product have many many exotic and spicy colours. I have installed metafield2 application, maybe this one would make it possible. PLEASE FIND THE ATTACHED FILE FOR MORE DETAILED INFORMATION AND OFFER ME PLAN AND BID! PS It would be very appreciated if you can tell me your plan or proposal for pursuing how to achieve. Because it could be very simple or complicate depending on your plan.