You're welcome! Yes, style customization is fully supported the "style" file has everything you need to create a custom inventory to match your game's UI. Just change the source images or adjust the slot size as you like. Everything's accessible, so modify away! Check out the docs (especially "Ren'py Official") to get familiar with the style code. Have fun customizing!
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Anything is possible if you have a clear goal! There’s more than one way to make inventory slots clickable in Ren’Py. Every developer has their own approach so you’re not limited to just buttons. For now, just know it’s achievable with a bit of Python and UI work.
Also, I’ve seen other people request this feature, so there’s a good chance I’ll include clickable inventory in a future update. Stay tuned and keep experimenting don’t hesitate to share your ideas or suggestions! These suggestion will shape the new version of the inventory system.