Hmmm, in the lakes I know of here with strong hatches of Daphnia they
are GREEN, often nearly lime green????? Don't remember seeing
brown ones, but probably there are as lotsa these creatures are
chamelions. I've heard of a mass daphnia pattern of green fuzz w/ darker
painted in Dots. He never claimed it worked though. Unfishable in my opinion.

Dragons are not often eaten by early season trout because they
are well camoflaged and creep around in the bottom muck. They
become "trout bait" more frequently in June-August when they
are emerging into adults.
But for some reason in a couple a lakes I know, I catch many trout
right off the edge of the melting ice with Dragonfly nymphs. These
are Dragonfly lakes with few leeches in them so it's no mistake they
are eating the fly for a Dragon.
Don't ask my WHY?? But it's true.