keeping in mind that one day that wall will need to be painted white with wall-paint?
Exterior latex acrylic paint Polyurethane paints Epoxy paints I'd say those would work. You might want to go to Lowes or Home Depot & get a second opinion though :)
No, you get acrylic paint that is especially made for painting on walls. Noraml acrylic can also work, but it might work out more expensive.
If it's inside the house, use an acrylic paint. They are water based and alot easier to paint over then oil paint.
The wall will need to be painted white when they decide to sell the house, in the future.
Do you mean normal acrylic paint? Like for paper or canvases?
thanks for those ideas :D