I had a hard time believing this was real, but this is the Rainbow Eucalyptus (Hawaii, U.) which grows in the South-Pacific area. The amazing color variations are naturally formed when the tree sheds bits of its bark as it grows.
While I like to plant native species in my gardens I can't help but want to try and add a few of these Japanese Maple to my forest where I have removed the undergrowth and overcrowded small trees. It would really be a standout!