I've just finished applying frosted window film to some large windows, and in some areas I have a small < 1/16" gap. For instance, where two panels of the film meet, and around the edges. I'd like to fill this in, to prevent someone from coming up and putting an eyeball right up to the gap in order to see in.

My first thought was frosted glass paint. But it seems to only be available as an aerosol, and it's been suggested to me that its frosted-ness depends on being sprayed on. I can't effectively tape off these tiny gaps - and applying tape to the film would pull it off the window anyway.

Ideally, I'd like to find some product fluid enough to just flow into the gaps (so that I'm not leaving a messy freehand paint line), with a bit of translucency to it so it doesn't stand out against the film. Ideas? Worst case, I'll probably fall back on regular white paint and a very fine brush.