Update component LivePreview

Hi
I’m concerned with my V2 component’s appearance at authortime in LivePreview. My component correctly scales and arranges itself since I’ve implemented the setSize method.

But I have also got colour properties which can be set from the properties inspector.

How would I get changes made from this inspector to update the component instance on stage? I’m after something like redraw() but I’d rather avoid UIObject/UIComponent for now.