Select a color without saving it in palette?

Hi all- Is there a way to select a color from the color picker (say while using paint bucket) and not have to have it become part of your palette? Knowing you just want to use it once and don’t want a huge palette to scroll through?

I’m asking for my 10 year old daughter. She uses harmony advanced and her animations aren’t super complicated and she likes to play around with colors but doesn’t want them all to add to the palette everytime she picks one.

Hope this makes sense! Trying to help her figure out little things that bug her abt the software. Lol. Thx!!!