Inspector for Notes / Background shapes

The detail in Inspector for colors, borders, font size is great. Is there anything like this for background shapes so that you can see (change) the size of the background shape, for example, 200 pixels wide by 300 pixels tall to become 250 wide by 400 tall?

You can customize almost everything other than initial size see options under File

File Options allows you to set certain default conditions for notes, but there seems to be no way to set the default size for a background shape. Am I missing something?