How can i change the color of an image by passing the mouse over it?

I’ve never used unity before sorry, so i have very limited knowledge.

I have to make this little game when i have this triangles and circles, when i pass the mouse over them, they have to change their colors. I don’t know how to make that, if you could help that would be great, thank you!!!

ps. the color has to stay.

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I’d look into using an EventTrigger on each item and hooking up responder functions to change the colors as you like.