Digital Workshop

I'd like to be able to design a component, e.g. a frame with text and a graphic, to use as a page element, for example a navigation button or page banner heading. If I edit the component in the component gallery I'd like all instances of the component to update in the pub.

I'd like to define a text style e.g. font/size/colour in the component gallery. If I edit it I'd like all instances of that style to change in the pub. A bit like CSS I suppose. An extension of the current tool which changes all instances of a font, but cannot change the colour.