Eliminate colors from predefined forms

[Harlak221922736ci7]

Hi, I was using the commentary tools. I used a square and a circle to remark a part of the document, but by mistake when I was looking for a color arround I selected a background color for the whole figure (covering what remains behind). i don't know how to eliminate this colors and keep only the frame. Can anybody help me?

[try67 · Accepted solution]

Select the comment(s), press Ctrl+E and change the first color in the floating toolbar that appears to No Color:

You can set it as the new default by clicking the More button in that same toolbar and then ticking the "Make Properties Default" check-box in that dialog: