I've used the Devcon 2 Ton with good luck. It's clear and available at the hardware store near me.

Most people don't know or don't care, but epoxy's have a shelf life and it ain't 10 yrs. More like a year or two at most. After that, properties start to degrade depending on how it was stored, how much oxygen, etc. I used to submit the stuff to our lab for properties testing in a nuc R&D proj I worked many moons ago.