Equipment Name Color Code System

1 point in deviation from normal: +/- 1 to any stat (STR/DEX/INT/LUK, and speed/jump), and if I remember correctly, +/- 5 to accuracy/avoid, or +/- 20 to DEF/M.DEF
And to the best of my memory & estimation, the color assignments are:
Negative deviation = Gray
0 to 4 points of deviation = White
5 to 9 points of deviation = Orange
10 to 19 points of deviation = Blue
20 to 39 points of deviation = Yellow
40 to 64 points of deviation = Green
65+ points of deviation = Red