[derobert]

If you want colored honey, wouldn't you just add food coloring to regular honey?

That's probably essentially what is happening here—the food coloring from the candy the bees are eating is getting into the honey.

[snogglethorpe]

It'd definitely be cooler if they could do it from colored flowers or something...

[I've seen a huge range of shade variations in honey, but nothing quite like that bright blue!]