[Manco]

Off the top of my head, the five colours are:

• Positive
• Highly positive
• Balanced
• Negative
• Highly negative

From top to bottom I'd suggest replacing them with Happy, Wired, Neutral, and then either Sad and Angry, or Angry and Deceased.

So here's some rough mockups. They're stacked in the same order you posted the default ones in - you can probably tell which icon is which face.

The dimensions of each face are 8px by 13px - 3px taller than the default rep icons.

Can we not replace the rep bars with the deceased face to mark out banned members?

Skull and crossbones doesn't scale down well. I wouldn't recommend it.