Is there any way to "lock" a style?

I am trying to do homework and I am supposed to write my answers in color, but I have to click on the color/style every single time I need to write. It would be really helpful if there was a way to not have to do that, Thank you already for answering!

Assuming the “answer” is to be provided on some predefined “space” (text field, empty paragraph, sections) there is no chance, because these predefined “space” already has some style setting, which requiers to be changed to the desired one. So you need to turn to the creator of the “answer” paper.