Finally got approval to post this. The .zsc file will add 6 buttons to the bottom of the ZTree plug-in.
Your colors will be retained. To install just unzip to (on Windows) C:\Program Files (x86)\Pixologic\ZBrush 4R6\ZStartup\ZPlugs and then use load script. They are easily removed by deleting the script file. Happy ZBrushing



Upper left button is similar to pressing grow branches 3 times in ZTree, You must Start a tree or have one loaded.
2 buttons for random settings: Maybe useful.
One in lower right not hooked up at this time.
It looks like this. Still WIP. Readme in zip file.