Place theme.p3t file in X:/PSP/THEME/ folder and select theme from XMB->Settings->Themes
X is your psp USB or PSP media card
Or Download Only theme file directly from your PSP internet browser.
Description:
If your really into Paintball you'll like this. It has the logos of a couple pro teams (Dynasty, XSV, Infamous, etc.) and major brands such as smart parts, dye, empire, etc.
yea
Pro Paintball 
Team Dynasty
Miami Dolphins
