Dave Bonta speaks directly to a painted trillium, a woodland wildflower that blooms briefly in early spring. He addresses it like a "painted lady" who arrives late and in a hurry. The flower pushes up from the ground and is pollinated so quickly that its petals begin turning see-through within a day, its pink fading just as the forest canopy fills in and the light dims.
The speaker's tone is affectionate and a little teasing. The question "isn't it?" suggests he sees the shade as the flower's real home, not a loss. Even without pollination, the trillium looks soft and blurry at the edges, ready to give up its color and grow pale, which he wryly calls "the opposite of a tan."
The mood is gentle, quiet, and slightly wistful. The final lines suggest that only a cold snap could keep the flower's whiteness, so its beauty is something brief and easily lost.