This is a gray area. because the end-user is creating original artwork (the background, the icons). However, never pay for a theme. The PSP homebrew community operates on "Donation ware" or free distribution. If a website asks for a credit card to download an Iron Man theme, leave immediately—it is a scam.
If you just want an Iron Man background, you can save a JPEG or PNG image to a folder named in the root of your memory stick. You can then navigate to on your PSP, open the image, and select Set as Wallpaper from the options menu. so you can use the more advanced .ctf Iron Man themes How to Download and Install Themes on the PSP - wikiHow 10 Mar 2025 — Download Iron Man Psp Theme