I want change node icon for each forum node.
Please help me.
What style are you using? Caesium style for Xenforo 1 or Caesium style for Xenforo 2?
If you are using Caesium for Xenforo 1, you can use Custom Node Styles add-on to change it.
If you are using Caesium for Xenforo 2, you can submit a ticket to our Custom Works department and then we can achieve it for you. Otherwise, you need to write CSS for each node.