Orange is a favorite color for me. I do have a few that I consider clean-colored. Perhaps you might like one of these...
'Orange Grove' (Stamile, 2007)
'City of New Orleans' (Smith-FR, 2007)
'Flower Pavilion' (Kirchhoff-D., 1985)
'Kindling the Flame' (Grace-L., 2010)
'Pure and Simple' (Salter, 1993)
'Spacecoast Tiny Perfection' (Kinnebrew-J., 1998)
'Tangerine Horses' (Kaskel, 1996)