Looking at the tail and along the spine of Sinosauropteryx the darker 'fluff' is quite visible. Study of this feathery fluff indicated that it was most likely a red or rufous colour. For a paleoartistic perspective on Sinosauropteryx check out this National Geographic article. So Sinosauropteryx had a striped tail, and a ridge of rufous downy feathers along its spine! Work is now being done to find melanosomes in other specimens, to give a much more colourful understanding of dinosaurs.
I should also add that in my previous post I put forward that Archaeopteryx was not much of a flier, but more similar to a gliding mammal. Further reading today shows that the information I based this on is now out of date. It is now thought that Archaeopteryx was actually very capable of flight, much the same as a modern bird. To make up for this I give you a spectacular image of a fossil Archaeopteryx which is from the Berlin Museum for Nature.