Painting/Sealing the Underside of EVA foam

Hi,

I'm working on a Portal gun for a friend for the UK Expo in May, but I had a question.

I'm using EVA foam tiles for the White 'Shells' on the gun, but I'm wondering if anyone has any advice for painting the underside of the tiles? The only ones I could get hold of were green, so will require recoloring.

A lot of the advice on here seems geared towards painting the upper foam part and I'm following the advice for sealing those with PVA glue.

Yes just do the same , seal with at least three coats PVA , then with two coats resin , proceed as normal , prime , dry , paint, dry, clear coat .