I think member "Utopiapga" might make this sort of item. personally I don't think I would glue anything to my paint, bugs are hard enough to get off. They mention it's made of a vinyl 3 d gel, and it stick with some type of stron adheasive. Just doesn't go along with "custom paint" in my book. I hope I,m wrong.
"Unique KEITI design, which complies with design and colour of various motorcycle models
The featured product is a 3-D gel (resin coated) tank pad, which will protect your petrol tank and also will make your bike look good
Effective under a wide range of temperatures: -10°C to 80°C
Manufactured using high quality imported vinyl
Features strong adhesion to ensure product wont lift or peel off
UV resistant silkscreen printing used to prevent fading even after repeated exposure to bright sunlight
Exclusively formulated non yellowing resin and 3D gel layer assure durability"