Blue floaters in canned hot peppers
This is a few months late, but just in case you haven't resolved this some other way, I'd say that: 

First, don't eat them. I think it would be best to contact your local University Extension Service (if you are in the states) which will often have access to USDA proper canning methods. It's likely that they would know what this is or could recommend how to find out. They are exactly where I go when I find a weird spider in the garden and that type of thing. Good luck!