When Merida hops on her horse and takes her "day off" she is wearing a royal blue dress. However, when she climbs the rock next to the falls, and on the top of the rock, her dress is dark green. When she goes back home, she is wearing a blue dress again.
After Mor'du gets crushed by a large piece of stone, and the sun is rising, Merida removes the tapestry from Angus to place over her mother, who is still a bear, in hope to break the spell. Angus also appears to be in the circle of stones, yet, in the shot that views everyone in the circle of stones from above, Angus is nowhere in sight.