I repainted one of these for
Fallen a few years ago, but neglected to take pictures before shipping it. I did use the same paints that I used on my Nerf Assault Rifle repaint. They were acrylic paints that I painted by hand. I hand painted it for two reasons. One, the best gun metal and metallic dark gray to achieve the sort of two tone paint job on the majority of UNSC weapons was an acrylic paint I stumbled on, and two, I didn't want to mask off all those small areas for rattle can painting and found hand painting it to be the easiest way to maintain control without masking off.
You can see which paints I used in my post on it here:
Nerf Assault Rifle Repaint Like many other members I was able to get a great deal on the Nerf Assault Rifle on Amazon. At the time I got it back in July it was a "Deal of the Day" for around $30. It's Manufacture's Suggested Retail Price (if you ever wondered what MSRP stood for) is around...
www.405th.com
I believe
Negativecacti was able to do a repaint with Rattle Can spray paints with no negative reactions from the foam base.