Yes, you can use another my plugin, add it to both persons and change colors. Here is a link at the bottom of description of plugin)May I make an additional idea?
Would it be possible to change colours of the nodes for several persons?
Like example, make Person 1 green and change Person 2s´ nodes yellow so you can keep track of the nodes in a scene?

Atom Controllers Colors - Plugins + Scripts -
This plugin is designed to change colors of controllers states for specific Atom. Add to any Atom and setup colors to your taste. One Color Mode allows to use color from On state for all other states, except Off state. (If you don't really...
