The poem expresses a desire to change the world by painting it with different colors on a palette. Sadness would be painted yellow to make smiles sprout. Hunger would be painted green to make healthy fruits grow. Polluted rivers would be painted blue so that fish can swim freely. Arrogance, prejudice, greed and envy would be painted black and turned to asphalt so they don't spread. The author is tired of wars, inequality and lack of hope, but finds it comforting to fantasize about recreating a better world through colors.