Absolutely LOVE the colour groups: fantastic solution and a really flexible way of handling it. I also love that the colour groups are saved within a vault across opening/closing the graph view, and changing the workspace as well 
Just one small request: can the colour groups also be used/applied to the local graph please? Iāve already got very used to the colour coding Iāve set up globally in my main vault, and applying the same coding the the local graph works, but it just seems redundant to have to do it twiceā¦