Starship Troopers - Space marines(not the powered armor kind) killing bugs with machine guns and sheer manliness. Always a good watch. The Good Son - Home Alone Kid vs Frodo. A majorly fucked up movie about how some kids are just born Satanic. And that's all Kono owns for movies :C.
A color changer would be awesome. It's been done before, script-wise, but so long as it doesn't affect the performance of the gun.. I think it would be awesome sauce.