Here's a colourful stamp from Romania from its "Live Healthy" stamp series issued in 2012:
Aren't they pretty? Bright reds, yellow, oranges, blacks and whites - my scanner didn't do justice to the stamp, my apologies.
The vegetables and fruits above have more to offer than their pretty colours - they are loaded with vitamins and minerals necessary for a healthy body and mind. So let's keep it in our minds, think rainbow when it comes to choosing what fruits and veggies to eat :)