Well the problem leaving the paint as it is is that it wont have U/V protection and the paint it self will start cracking after a year maybe less, thats what the clear coat does u know.

What u can do is to apply clear coat that is satin, or put a flatting/matter/satin effect to the clear if you are using car paint.

The last option but u have to try it is in a test 1st to see how it looks, to use regular car pain 2k clear coat and then sand it with 2000 grit sand paper to get the shine out, but if you are using rattlecan spray paint it is pretty bad idea to put car paint over it because probably the clear will melt.

When u say lacquer u meant car paint or are u talking about rattle can spray lacquer? Big difference between them. In england and other places they call polyurethane car paint lacquer, thats why i'm asking.