Can I use an epoxy mixed with tint to repair corinthian counter top?

Yes but the chemical mix is different. The repair kits for Corian are polyester not epoxy.

Corian is a mixture of natural mineral (ATH) and acrylic resin. It would be inappropriate to usa a polyester to repair it.

If you have a crack you will find a solution here:

https://sites.google.com/site/coriartinc/Home/price-list/simple-permanent-crack-repair

I hope this helps
Ken

Sorry about using "polyester", Corian is a "polyacrylate" resin.

Ken - Please contact me at [email protected].