Totally normal. Here's from the first hit on Google for "bruise colors":
Quote:
Initially, a fresh bruise may actually be reddish. It will then turn blue or dark purple within a few hours, then yellow or green as it heals.
It is the hemoglobin in the red blood cells and the breakdown products of the hemoglobin that cause the coloration seen in bruises as they age. Although bruises may appear black eye, the blood is never really black, rather it is a dark purple and green. Most of the color seen in bruises is due to the biochemical breakdown of hemoglobin, the oxygen-carrying component of blood (white blood cells are removing the decayed blood products little by little). Different components of the blood have different colors, and these colors in turn lend color to the bruise. There are two major breakdown products that can lead to visible color in a bruise. These are a green pigment called biliverdin and a yellow-brown pigment called bilirubin. Bruises usually start out as a dark blue or crimson; fade to violet, green, and dark yellow; then turn a pale yellow; finally disappearing completely.
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