Dr Mike says bruise colours can’t reliably date an injury

What was said

"Can we estimate with a good amount of accuracy how long they've been there? Nope. We've tested this and we're not good at being accurate about it."

While discussing black-eye bruising, Dr Mike says colour changes (purple/red/blue/yellow) reflect blood breakdown but cannot be used to accurately estimate how old a bruise is. He frames this as a tested limitation rather than a dependable forensic marker.