"color" a map activity questions on how to

Hello! I was wondering if someone could help me with thinking through the "how to" of what I would like to do. I am creating a map that I would like kids to "color." I have made paint buckets and brushes with various colors. I've tried changing the state of the brush to a color state based on the paint bucket the brush is dragged over. It isn't perfect and I'm open to suggestions. The other piece stumping me is the most efficent way to get the landforms to change color when highlighted with the color brush. Is that a hotspot or a shape attached to state changes and/or variables based on the brush color? Any suggestions are welcome! Thank you!



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