You can do it. First prep the very clean frame - maybe a little wet sand avoiding the decals. Then fill in chipped spots with liquid primer and paint. When the filled spots are dry, wet sand those down to remove ridges. Carefully mask the decals and spray the frame with an air brush if you have one(and know how to use it) or a rattle can. Wait for it to cure and that is long past when it feels dry. Finally use a polishing compound to blend the repainted areas near the decals.