I am pretty sure most of you already know. But for those who doesn’t know how to create your own theme for your BlackBerry you can take a look to the article Just theme it
http://na.blackberry.com/eng/developers/resources/journals/sep_2006/theme.jsp"]
RIM http://www.rim.com/
What can you do with Theme Builder? Some of its main features allow you to:

* Customize the BlackBerry application icons
* Change the Home screen banner image and icon/indicator colors
* Create your own buttons
* Customize the look of dialog and pop up screens
* Customize an idle screen
* Customize the look of menus and lists
* Customize the phone application screens
* Customize fonts used on the BlackBerry device

And the result may look like this:

http://www.blackberryinsight.com/wp-content/uploads/2007/04/MessageList_Screenshot.png

Developer Journals - Just theme it! by Mark Sohm & Patrick Strack, Research In Motion

Where I can find the Theme Builder? Can you give the link?

You have to use the Plazmic SDK.. I haven't found a direct link for it anywhere, the bastards make you reg/fill out a form for the DL. Use your spam email account and get it here;http://www.plazmic.com/en/download/index.shtml

done it. but still need some programs from java. :(

hey does anybody happen to have the link for plazmics new 4.3 beta