There's no doubting the visual appeal of the flamed maple on these Kala ukuleles. But the major contributor the the tone is the spruce top of the uke.
Musicguymic plays with his Kala Flame Maple KA-FMS Ukulele.
On eBay UK
Kala Flame/Spalted Maple Soprano Ukulele - $209.99
Construction: Solid Spruce top, Spalted Flame Maple back and sides
Tuners: Chrome die-cast sealed geared tuners with amber buttons