they didn't answer questions, but mine got answered! XD
quan's purple makes skulls and runes like harley's MB grab that does additional damage
green has single hit (continuous?) armor.
red makes opponent take more chip damage.
the green circle was confusing because torr kept throwing ferra and quan would armor through it, so they made it seem like he keeps the armor from single hits, but it breaks if he gets hit twice. idk.
he has purple, green, and red circles.