I have heard the Purpleheart Wood looses it purple color and ends up turning brown. Is this true? If yes, is there a way to preserve the natural purple color? I'm considering a project using Purpleheart, but have no previous experience working with this wood. I've also hear something Sun exposure may cause it to turn brown, and then someone else said that when you plane it, it will turn brown but if you expose it to the sun the purple color will return. Doesn't seem possible that it could be both. Anyway thanks in advance for sharing anything you can regarding preservation of the purple color of Purpleheart Wood.