we recently bought a 20 gallon acer palmatum viridis,brought it home and planted it only to discover a tag on the plant said waterfall. are they the same? do they have the same color change in the fall. we bought a viridis because my wife is from japan and there the viridis change to a golden red in fall. we hope that the waterfall is the same. its doing nicly here. all leafed out. can you help?