Yes! On philips-hue.com, go to Replacement parts (underneath Products) to see which extra parts are available for purchase.
Replacement parts
FAQ list
Can I order replacement parts for Philips Hue products?
I can't find the replacement part I need. What should I do?
If you haven't already checked, go to Replacement parts (underneath Products) on philips-hue.com to see if the part you need is listed there. If it isn't, contact Customer Support so they can help you find the part.