Yes! You can glue and paint the fiber optic filament. however keep in mind that the filament is basically a polymer based plastic, therefore you should use ‘plastic friendly’ paints and glues.
… Unless of course your desired result it to ‘melt’ the fibers into themselves and your project.
BTW: Melting the fibers will destroy their light transmission properties.
So what types of glues can I safely use?
Avoid glues that use drying agents or generate heat as they cure. Krazy Glue or Super Glue (Cyanoacrylate or CA) should be avoided.
‘Fiber Safe’ glues include Elmer’sTM White Glue, TitebondTM Glue and some 5 minute epoxy’s and polyurethane adhesives will work great.
TIP: Always test your adhesive on a scrap section of fiber before using it on the actual project.