We recently hard concrete poured in front of our home and when it rains the concrete in front of my home looks disgusting while it's drying. Now that it's fall it looks absolutely hideous when I remove the leaves (wet leaves actually - it rained). It looks like there is tons of soot and the whole mess is patchy. What gets me is that rest of concrete in the area - sidewalk, neighbors, down the block, etc. - all have a uniform looks. The drying isn't patchy and the leaves don't leave heavy dark spots.
Am I over reacting or did I get screwed by the contractor?