There are two ways to format a toolbar on an app.
1. A background colour could be changed to any solid colour. Input a HEX code to change the colour of the toolbar.
2. An image can be used to create a branded toolbar image. Please note: All toolbar images must be 1536px X 100px

To upload an image, go into the toolbar section and press Add Image. Select and upload your image from your computer, and select it from the image library and press the Use this imagebutton.