Change selection icon on all my question slide

I am new to Storyline, I find it to be an extremely intuitive tool. However, I can't solve something.

How can I determine a default layout for the option selection icon (in a multiple choice question)?

I have uploaded a screenshot for more clarity.

It happens that I want it to have another color, but I can't find where to adjust the default color, I can only change it by clicking one by one on the selection icons, but that would take a lot of time.

Thanks in advance. Greetings.