More Than One Choice In One Drop Down

Is it possible to create an option that allows more than one choice in a single drop down. For example; I have a list of 25 colors for a product and I want my customer to be able to choose 3 colors for the print they are purchasing. My options list for this product is getting long. I was hoping they could just click 3 different colors and it would add all 3 to the cart :) Any help is much appreciated! Thanks so much for taking the time to read my post :)

Btw…I realize I can add the option to my list 3 times…but I am trying to prevent the list from being so LONG ;) Thanks!

Here is a link to the product I am working on.

Alt team and cs cart rocks both do a product options matrix addon where colours can be added from a table,