Sad, but that's pretty much exactly right. I have had to 'sell' the other judge, to give a crappy model 8 points, and I don't believe I've ever given less than that, tho I'd like to.
OTOH, I don't think the cockpit details are that big a deal. Plus one or two points, maybe? The problem is that it can go all wrong real easy...dust inside, warped canopy sides, scraped up top from an inverted landing, pilot comes loose, etc., etc., etc, and the resulting hit on points...maybe minus two? Not that much to gain, for a lot of work and potential grief that is very hard to repair so it looks as good as it once did, or could have looked.
Dyeing canopies isn't as easy as it once was, either. Different materials dye differently, take different amounts of heat, and it's not always easy to find out what the material is. I noticed that the R/C car paints come in transparent charcoal for painting the windows in those plastic bodies. I think this is a better way to go, rather than dye. I also noticed they have color changing paints in small quantities and at reasonable prices. Might be interesting for a trim color, for instance. See the big Tower catalog. Midnight's nigh....

Steve