magent product customizing part II

Modifying products under Magento. Our product is a png24 transparent file. When the customer select this he will be redirected to the product detail page, and there is a extension (color) where the customer can change model and color of the product. The selected product (png24 transparent) must be projected (static) on the shirts, while the customer can change the model and the color and see what's combined and can order this. There must also come a solution when we add a white image that it will be visible with a darker background so the customer can see the white png24 file. it must work like this extension: [login to view URL] The most important is that we can easy copy the setting of 1 product into other exisiting products. This is possible with that extension ( [login to view URL] ) Our current modification is working but the duplicate function and copy (export/import) to other existing products are not working. We need to add quick new products based on 1 default products. All the products will have the same custom options: model - color and size. User and admin friendly, seo and well written