In just three short lines, Dave Bonta turns a quiet act into something loud and risky. Someone is painting fruit, the classic subject of a still life, which is usually a calm, motionless kind of picture. But the poem gives the scene a "howl," as if the colors themselves were crying out. The title promises stillness, and the poem pushes against it.
The last line is the key: the howl is "like a bet on joy." A bet means you might lose. So the speaker seems to see making art, even of something as ordinary as fruit, as a hopeful wager that beauty and delight are worth backing. The poem suggests the speaker feels a mix of excitement and daring, not calm contemplation.
The mood is energetic but also tender. There is a small thrill in the idea that a bowl of apples or pears could carry so much feeling, and that paying attention to them is a way of choosing joy.