The latest SharpTools.io beta includes support for choosing icons and colors for each device state (for a number of device types).Since you’re part of the beta program, you can find details on the new feature in the following post in the private Beta Testers category:
https://community.sharptools.io/t/custom-icons-and-colors-based-on-states/2843?u=josh
For anyone else who is interested in joining the beta program, you can find more details on how to join the beta in the Beta Testers Requested! thread.