At one time I used Word to create a new document and included some Vector Art from Word. The particular object was a Mandala. Now I can't find that Gallery. Not only could I change the size of the object but I could also change the color. Does anyone know where to find this feature now?
Click on the object so it displays its bounding box. Depending on the type of object, one of the "contextual ribbons" will appear, with a tab that says "Shape Format", "Graphic Format", "Picture Format", etc. The buttons on that ribbon will give you the tools to work with that object.
Alternatively, right-click in the object and click the "Format [object type]" item at the bottom of the menu. That will open a pane on the right with the same tools.