Yes, my days have color, but that's not all. I have big time synaesthesia. I was in my mid 20's before it occurred to me that letters and numbers might not have colors to other people, or that they might have different colors. I shared my colors below.
Another thing relating to the calendar... My year runs in an oval (a track), with spring and fall on the short ends. We're going counter-clockwise, so if I look over my left shoulder, I'm facing summer (given that it's winter now).
Monday = Dark Blue
Tuesday = Charcoal Gray
Wednesday = Slate (blue/green/gray)
Thursday = Warm (orange) gray
Friday = Red
Saturday = Yellow
Sunday = Yellow
0 = White
1 = White
2 = Carnation pink
3 = Yellow-green
4 = Orange
5 = Bold Red
6 = Mid blue (faded blue jeans)
7 = Cadmium Yellow
8 = Light periwinkle blue
9 = Very dark blue
A = Red
B = Blue (like 6)
C = Yellow-green (like 3)
D = Lavender
E = Emerald Green (fitting)
F = Hot pink/red
G = Forrest Green
H = Brown (why I'm not fond of my last name)
I = White
J = Hot Pink (why I've always liked my first name)
K = Light periwinkle blue (same as 8)
L = Buttery yellow (same as Y)
M = Deep purple blue
N = Very dark blue (like 9)
O = White
P = Orange (like 4)
Q = Opal (shimmery)
R = Bold red (like 5)
S = Cadmium Yellow (7)
T = Dark gray
U = Very light blue
V = Gold (like a gold crayon)
W = Slate (blue/green/gray), i.e. Wednesday
X = Black & white (like a zebra)
Y = Buttery yellow (see L)
Z = Jet black