Hi all..this time a year in my neck of the woods..the leaves turn a brilliant red..very beautiful! However..don't think my little azalea is supposed to!

No insect damage, leaves not curling, falling off, no signs of any damage at all...just turning bright red..80% of the small (planted last year) plant is red...It is planted along a bfly bush which is fine...then on the other side of the bfly bush is another azalea..this one has about 10% of it's leaves red...

I've tried to google this problem myself but the term "red leaf azalea" only brings up info about red flowering azaleas...

Any ideas? I can post a pic but it's pretty easy to visualize...Thanks..