A sycamore maple tree named `Tunpetti` having unique foliage color. In summer, the upper leaf surface is dark green, and the underside is greyed burgundy in color with vibrant red petioles. The foliage changes to a superb bright yellow upper and warm pink lower surface color during autumn. The bark of `Tunpetti` is uniform and smooth with only a slight scaliness and limited vertical fissuring. In addition, `Tunpetti` has been observed to be exceptionally resistant to "tar spot", a leaf disease common amongst Aceraceae.