Numbers:
0 = colorless or white
1 = white
2 = bright green with a shade of turquoise
3 = pinkish red
4 = dark orange
5 = scarlet
6 = dark blue, inbetween dark ultramarine and bright navy blue
7 = silvery gray
8 = deep, bright forest green
9 = dark umbre, somewhat grayish
Letters:
A = rich scarlet
B = deep navy blue with a shade of indigo, nearly black
C = bright whitish yellow (almost white)
D = light brown with a grayish shade
E = deep, dark yellow (closer to very bright orange)
F = bright violet
G = deep burnt carmine, sometimes closer to chocolate brown
H = bright ultramarine (sky blue)
I = very dark ultramarine
J = lighter, brownish burnt carmine
K = vermillion
L = bright sunny yellow
M = bright forest green
N = navy blue
O = white or colorless
P = dark pink
Q = very light, shiny pink
R = deep, rich crimson
S = white
T = light, tender greenish turquoise
U = darker orange with a brownish shade
V = deep, dark violet
W = deep emerald green, maybe with a turquoise shade
X = bright pinkish violet
Y = light orange, inbetween orange and yellow
Z = very light brown