As far as i know there are no commercially available System Builder GUI templates.

So anything you buy from guifx,ntdesigns,guiwerx etc wont be "plug n play" "auto generation friendly".

You basically have two options. Both were mentioned above.

Option 1 : Mentioned by Sofa King.

Edit template data. In my opinion (IMO)... by the time you figure out how to edit enough template data to make a GUIFX (for example) template work reliably with System Builder you could have already learned SIMPL.

Option 2 : Mentioned by lites4u.

Just copy/paste your GUIFX (for example) template pages into your System Builder project file. Manually create macros and page flips and assign commands to buttons.

I do this often with theaters/surround systems. Simple 1 room stuff that doesn't warrant using a real programmer. Works very well. Gives you the custom look but keeps programming in System Builder.