finding interior touch up paint

[blue_vett]

We are looking for touch up spray paint for the inside roof and walls, the shells have rubbed together to the point where the paint has worn and it is shiny silver, does anyone have a recommendations for a can of paint that is the same color?

also i need to touch up my outer shell in some places, what kind of paint is on the outside?

and while i am at it does anyone else have the dirty streaking happening where the two shells touch and the seals rub? we take so much time cleaning the seals and the shells when we get home from a trip that its exhausting.

thanks