I love how flowers and foliage — and tree trunks and bark — look after it rains. The colors pop, and any beads of water that linger add nice visual interest. I recently walked around our neighborhood just after a rainy spell, and came across this very colorful, wet tree trunk with speckled bark. I’m not certain what kind of tree it is (any clarification on that is welcome), but the mossy green of the bark that remained on the trunk and the contrasting yellow-orange layer underneath really caught my eye.
Update 3-3-13: I think this may be either a Chinese or Lacebark Elm.