Hawkeye's mask goes from a translucent purple and to marked opaque purple when Ant-Man approaches him in the sewer.
Hawkeye's sleeves continue to be seen and unseen down on his arms.
Hawkeye's glove on his bare arm occasionally is shown as mulberry instead of black.
After he puts down the paper, Clint's eyebrows are black when they are blonde in every other shot of him.