For both plants, I used mostly merino SA 25 from Artgus (80% merino and 20% corriedale) and a little bit Ashford Corriedale (a dark green). There's a little bit of white silk that I blended with SA 25 for accents on top and bottom, following your instructions. The greens on both plants are all a blend of two colors, a darker and lighter green. The leaves of the bigger plant have a reddish bottom. Since I didn't have burgundy on hand, I ended up blending a purple, blue and red (all merino SA 25). I followed your suggestion and used black as my middle layer. The fibres migrated well throughout the felt -- for the bigger plant, both black and burgundy migrated through the greens to the top part of the leaves, giving it a great mix of colors