Positive Digits-

Fur colors are lighter in tone. Not many Positive Digits have dark fur colors. Eye colors are usually a light/bright color.

Numbers: 1 to 99

Negative Digits-

Fur colors tend to be cooler tones of a color, darker shades. Few have light fur. Eyes tend to be darker than the Positives.

Numbers: 1 to 99

Note: Negatives and Positives are rivals and tend to avoid each other. Most interactions end up in fights.

Fractions-

Fur color can be two colors at once. One side might be degrading pixel by pixel while the other is still there. Eye colors vary in wide ranges, different colored eyes.

Decimals-

Colors are mostly faded with spots around the eyes and back. Lines can appear on spine and snout indicating a repeating number. Eyes vary in color.