Have search other sites for some guidelines on color coding my HUD stats and thought I would start a thread here to see what ranges people here assign their stats.  As a starter I thought we could discuss the main four that seem to be used that being, VPIP, Preflop Raise, Aggression Factor and 3-Betting. 

I currently assign all my stats in three groups as follows

VPIP

<15 <25 <inf

Preflop Raise

<10 <20 <inf

Aggression Factor

<1 <3 <inf

3-Betting

<2 <6 <inf