I'd imagine the color of the icon is tied to the status of whether or not the poller is returning results, or is enabled or not, rather than tied to specific thresholds. If it is, you may want to check the website settings or thresholds to see what you can setup there. Otherwise, this would almost seem to be a feature request that I'd vote up in a heartbeat.
the color of UnDP leafs on the map changes according to configured thresholds.
- If threshold is not defined(default) it is only green(polling) and gray(not polling).
You can configure thresholds in Settings - Custom Poller Thresholds.
- On the left side select poller.
- On the right side first select "Poller Value Type" Text or Number - this influences operations to compare values.
- Then configure Warning(yellow) and Critical(red) threshold.