I'd love to find some flex mobile templates to use in flash builder that already have the platform of many of the functional UI elements in them. I feel this would be a great springboard to learn more through examining pre-built projects as a means to get started with designing my own iPhone apps. Are there sites available where I can purchase such templates? What kind of file extensions am I looking for ui templates that would plug into flex mobile in flash builder? If they are free that is great too, though I don't mind paying for good quality app templates and would appreciate suggestions of sites/services that offer this.