A "raw" yellowish-brown color, or a "burnt" reddish-brown
2. the color of... [DOC] [TLE] Burnt sienna | Define Burnt sienna at Dictionary.com [PAR] a ferruginous earth used as a yellowish-brown pigment (raw sienna) or, after 
roasting in a furnace, as a reddish-brown pigment (burnt sienna).