@stephen_nutt: While playing with colors, I found an hidden (or not [documentation]) feature of Node-Red
You can use theme in setting to change node's color:
Update settings.js with these values:
editorTheme: {
palette: {
theme: [ // Override node colours - rules test against category/type by RegExp.
{ category: "hubitat", type: "^hubitat hsm$", color: "#f0f" },
{ category: "hubitat", type: "^hubitat hsm-setter$", color: "#ddd" },
{ category: "hubitat", type: "^hubitat device$", color: "#f8f" }
]
}
}
}
Now I feel sorry for your flow 