"Extra Attribute" e.g. "user data, treeID" drawing in one color

[Francoisdt14]

I have a .las point cloud where trees were segmented using the lidR package in R. After importing the point cloud into the Potree Viewer, I can see that the 'treeID' attribute appears and that there are 640 trees (which is the same as viewing this data in other software). However, the trees are only displayed in a single colour (see screenshot). Is there a way to display user defined attributes using different or random colour ramps, similar to how 'elevation' can be displayed? I have also included a screenshot of the las header where you can see that treeID is included as it's own slot.