Try going to this forum and the surfing or using the search this forum tool. I think there are a few and they differ in respect to cost and function so do a little research.
Here's how to get to one Storm theme called AppleBerry. Of all the betas that have recently emerged with an iPhone/Apple look and feel, I believe this is the best by far.
1) On your Storm browser, go to http://m.crackberry.com
2) Click "Enter Crackberry Forums!"
3) Scroll down to "Blackberry Themes" and click it
4) When you see "Blackberry Storm 95xx Themes", click on the text beside it that says "AppleBerry - You're gonna wanna check this out"
5) You'll see a listing at the bottom of the screen for all the pages in that thread. Click "First" to go to the first page
6) You'll see the first thread post show up, and below the bold red text there is a link that says "Click here to dowload!"
You should be prompted there on your phone to download the theme to your phone. If, after you've gotten it on your phone and begun to use it, if you experience any lag of strange behavior, do a battery pull and it should clear up.
There are others being developed. Mothy makes at least one cool variant on the iPhone/Apple theme as well. You can do a forum search on his name and do some more research.
Hope this helps.
Last edited by Saiyajin; 02-17-09 at 04:35 PM.
Reason: Spelling and added info