"Three Moons" Mothers Day Upcoming.

So I am planning to make something special for mother's day next week. My mother is grieving the lose of her mother right now, so I wanted to make something that would apply to all three of us.
I love the Japanese legend, Rabbit in the Moon.
Since we have a cute little bun, I thought it would be a cute gesture.

But I am deeply stumped for coloring in with watercolor!

Which colours do you think is best?