Synesthesia: from the Ancient Greek σύν (syn), "together," and αἴσθησις (aisthēsis), "sensation"—is a neurologically-based condition in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway.
0 = clear 5 = black or navy blue
1 = white 6 = orange
2 = yellow 7 = grey
3 = green 8 = maroon
4 = purple 9 = black
January = white or vanilla sky (soft pale yellow and thin light blue)
February = deep plum
March = rusty orange
April = pale pink
May = deeper pink
June = sky blue
July = real blue, sometimes white
August = soft red
September = golden
October = dark grey
November = orange
December = pine green