Acer palmatum 'Aoyagi' has at least two standout features. One, the green bark, which is often considered a counterpart to the red bark of 'Sango kaku' and suggested as a pairing. Particularly for that winter interest. The second feature of note is the bright, chartreuse spring leaf colour. Fall colour is yellow.
While not flashy like variegated types, I find there to be something very attractive about the leaf shape, colour and overall form of this tree. 'Aoyagi' may grow to about 15-18' tall.