Select the Shape map, go to Format> Data colors, you can choose Theme colors and apply them to your map.
Thanks for your reply.
I was refering to the shapes within the insert ribbon rather than the shape map.
When I change the theme all of the visuals are affected however nothing else. Wasn't sure if there was currently a way of changing this.
Yes. shapes will not be affected. You would need to select the shape, go to Format shape, choose theme color for Line or Fill or Backgroud.
I was hoping that the September '17 update for Power BI would list shapes in the cardName values list. I got excited when I saw shape: Shape listed but haven't had any success after an hour playing with the json file. Has anyone else had the chance to try in the lastest version?