Here's my progress so far:

Desert Yellow (216, 175, 80)
Apple x8, Pear x8, Berry x8
Halatali Yellow (159, 125, 42)
Apple x12, Pear x12, Berry x12
Opo-Opo Brown (116, 85, 39)
Apple x5, Pear x5, Berry x3
Orchard Brown (93, 59, 18)
Apple x3
Mesa Red (118, 51, 4)
Berry x1
Orchard Brown (93, 59, 18)
Berry x2
Rust Red (91, 29, 5)
Berry x3
Wine Red (62, 17, 14)
Plum x2
Loam Brown (56, 45, 35)
Apple x1, Pear x1, Berry x1
Kobold Brown (42, 28, 23)
Plum x1

That plum should get me to Soot Black. Will confirm in 6 hours.