Movie Optimus Prime build

[kingbob]

So i'm getting pretty close to laying down some paint and am in a quandry. The OP movie truck has a thin light blue pinstripe around all of the dark blue flames (example below), but it is very thin, in most photos you cant see it. Only in close ups is it visible. It looks like its maybe 5-6mm thick, (a little under 1/4") which if it was painted with a proper pinstripe paintbrush would be about right.

Trouble is in 1/14 scale, that makes it somewhere in the region of 0.3-0.4mm thin.

I do have some 1mm pinstripe paper masking tape which is reasonably flexible, and i think i've seen some vinyl 0.7mm online but using that to mask the complex flame design will be a *****. Liquid mask is no help as i'd never be able to cut a consistent thickness pinstripe.

So, do i try and paint a 1mm pinstripe, leave it out altogether, or perhaps try and use some thin blue vinyl to tape the pinstripe?

Suggestions?