Mysterious Leaf Color

The mature silver maple on the property has autumn leaves in an unusual color this year.Normally,the fall color is bright yellow.This year,however,the maple's leaves that have turned so far are partly to nearly completely red.Perhaps this is from the very hot and dry summer conditions.It could also be from the tree's age,or a combination of factors,not all of them ascertainable.Whatever the cause,the mysterious color of the old,big tree is a rare and welcome addition to the autumn palette.