Re: Can you reclear over metal flake ?
IF it looks a lot better when wet, then you can probably do a lot with clearcoat. I wouldn't use anything softer than two part acrylic polyurethane if you want it to last or look different.
The absolute key to adhesion is in roughing it up with something like 320 (just needs a good scuffing, not a major sanding down), and most importantly degrease it until you can't stand it then do it some more. Use something like xylenes that doesn't dry so fast it can't remove the oils, etc...
Shot at least a couple of coats and you'll probably be amazed by the results. especially if you take the time to colorsand and then buff it out after it is fully hardened...
That' my experience.