I live on the edge of a Madrona Forest in Puget Sound. There was a forest fire here about 60 years ago and all the Madrona trees date from that time. As they grew they twisted out over the hill to catch the light. They have both rough and smooth bark. The rough bark is a lavender gray. The smooth bark is usually a greenish gold, but in the summer the smooth bark turns dark brick red, splits and reveals a new green-gold bark underneath.