Old cartoon

Is this it?

Buttons & Rusty: https://www.youtube.com/watch?v=LlvK8sKV0eo

It all depends on your age, but a series with rabbits that comes to mind is "Gabby and the Little Einsteins," but I don't think that's it...

The theme song:

https://www.dailymotion.com/video/xgql9

Good evening to you! So it’s not the cartoon I was looking for but I thank you so much because "Gabby and the Little Rascals" is a cartoon I had forgotten! The theme song came back to me immediately. Thanks again for that!
I’m 20 years old and I think I watched this cartoon when I was about 5. We saw the rabbits dipping their tails in paint and tapping their butts on the eggs that were lined up. That’s the only scene I remember.
Thanks again for "Gabby and the Little Rascals" and happy new year to you!
--
“Knowing others is wisdom. Knowing yourself is superior wisdom”
Lao Tzu

Surprising, I'm looking for the same cartoon. Some rabbits even had yellow and black checkered paint that remained unchanged after application... a little comic absurdity, I can't seem to find it either! At least I'm telling myself that I didn't imagine it! :)

Oh yes, the shapes formed with a stroke of a brush! I didn't remember that! And at least I tell myself there is still hope that someone knows it =)
--
"Knowing others is wisdom. Knowing oneself is supreme wisdom."
Lao Tzu

Thank you JM!! I just saw your post and that's right, Funny Little Bunnies. Thank you so much!!! Liza Fang, we've found our happiness! Enjoy watching ;)
--
"Knowing others is intelligence. Knowing yourself is true wisdom."
Lao Tzu