Scientists determined that the feathers were iridescent black

The scientists then chose 20 feathers from one fossil and found that the melanosomes in all 20 looked alike,so they became pretty sure this dinosaur was one solid color.They compared these microraptor melanosomes to those of modern birds and found a close similarity,
though not a perfect match, to the iridescent teal feathers found on duck wings. And by examining the exact size and arrangement of the melanosomes, scientists determined that the feathers were iridescent black.