Thanks everyone.
I agree about the epoxy color, Kenny. I think that a dark blue would have been good because some of the color looks a lot like blue stain (most visible in the picture from the side) so it would have complimented the color scheme, though the lighter green does contrast nicely with the dark ring, which I think is bark, lining the knot hole.
--Nathan, TX. Hire the lazy man. He may not do as much work but that's because he will find a better way.