Furniture, Wood and Cabinetry Finishing - Antiquing furniture

Trying to surprise the wife by refinishing an old dresser that I painted mostly white with a flag on the top and red & blue accents on the drawers. However, the colors are a bit brighter than I'd like and it stands out amongst the other patriotic things in the spare bedroom. Is there an antique paint or glaze I could use to paint over all the colors at once to tone it down?

Applying one glaze over all the colors may give an effect you dont want. For instance, I use green to tone down red in furniture - obviously, that's going to give any white a green cast, and make blue darker.
Check with a good paint store - take a drawer or some color samples with you. It can be done, but I don't think a single glaze will be the answer.

A very dull clearcoat will take you a long way to hushing those colors. Or first try rubbing the fully-cured paint with 00 and 0000 steel wool (0000 is the finer), this may well dull it down enough. Depending on the paint you used, look around for a suitable clearcoat. I believe that there is one by the American Heritage series at Lowes that is a brush or spray on application that is suitable for most latex, oil, or enamel based paints.