1 hour ago, Tri2Cook said:This is not sarcastic, I'm asking this in all sincerity... why wouldn't it be easier to paint the yellow line in with a brush, spatter with black, then back with the blue? It would still be a lot of work painting all those lines in but it seems to me like it would be easier than trying to cleanly scrape colors away.
Maybe it is! Personally I think trying to get an even line with a tiny brush would be the greater form of painstaking tedium, but you have a good point about the heavy spots that could be brush stops and starts. Oddly enough, another chocolatier has something similar on Instagram today ...
And aside from the leech-iness, what boxes do these fit in? 
