Green Mountain isn't consistent in color if that helps. I see them ranging from Yellow orange to more yellow to more orange year to year. Mature trees are seen observed from Milwaukee, Madison and Chicago area.
Fall Fiesta is always consistent with its bold array of orange, red and a touch of yellow.
The 5 years I owned it it always colored up like the pic below. While the other cultviars varied year to year. The color held on as long as some native oaks. The native Sugar maples color up early after the native Ash trees to give you an idea on timing.
http://www.itrees.com/tree-species/maple-trees/fall-fiesta-sugar-maple.html
I must have glazed over that you needed multiple trees so multiple cultivars is a good idea to get a better mix of color and timing. Acer 'Morton' is another favorite.
http://www.chicagolandgrows.org/trees/sugarmaple.php#
Not at my home computer for up close pics but that is Fall Fiesta to the left. It stays intense like that after those others drop leaves.
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rocks in landscape
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