I have trouble leaving well enough alone, so I stole some doll eyes from my wife's craft supplies and glued them to the buttons. The clear silicone adhesive I tried first failed, but the light grey construction adhesive seems to be holding up ok. It makes the button more visible, too.
I’m in the ThermoWorks ecosystem for probes so I use Signals and the Billows fan. Have had no problems with it. I have a set of the wireless probes on order, which integrate in the ThermoWorks app with Signals and Billows fan control.