Thank you for trying! Its flash, and its pretty old.
Its a flash mock up creator, so basically customers can go to the site.
*pick a jersey style
*customize the jersey color. (like make the body green, and the neck and collar orange)
*add text and logos
*change the color and font of the text
I suppose. I don’t see anything from your list that’d be too hard.
Jersey would be an image pick the type display the image.
For color picking you could just display another image based on color picked or get creative with some css and color variables.
Color and Font of Text could very easily be done.
You could even drag and drop those images around to the user’s liking.