Which Philips Hue integration are you using? It looks like there’s an ‘official’ one where your Hue Bulbs would be connected to the Hue Bridge and a community developed integration where you can connect your Hue Bulbs directly to your Homey.
I haven’t personally tested either of these integrations, but does Homey expose a ‘device’ for the grouped Hue lights?
Otherwise, from a quick search of the Homey community, it seems like the < group > app is popular for creating groups of lights and controlling them together. From a quick test, it seemed to work quite well for your described use-case.
From the Homey app, just to show how the colors mirror across when controlled from the ‘group’ device: