uncheck default checkbox when user chooses attribute

Hi all,

I have products which have multiple colors to choose from and want people to be able to choose multiple colors and then add to cart. In my options, i have a 'select color' which is set to default, display only so that if the just try to add product to cart without selecting color, it will give them the error. Is there anyway to have the default selection be unchecked after they start checking different colors?

I'm not sure if i explained myself well enough, so if need more detailed info, please let me know. Thanks for any suggestions.

Not on the checkboxes at this time ...

This works on Radiobuttons and Dropdowns ...

Checkboxes are another animal ...

NOTE: on the Product Option Name ... if you hit EDIT there are additional settings such as Comments ... where you could add instructions ...

Thanks for your reply Linda. I'll use the comments for now.