[ns] Packet colors.

[Alexandros I. Giagkos]

Hello list,

I am implementing a self-healing routing protocol for ring topologies on 
ns-2.23. My header has a field "type_" which is set to indicate four 
different types of packets that the protocol can handle. For instance, 
one type is DIAGN(ostics) and one other is DIAGN_ACK.

Is there an easy way to change packet colors based on their "type_" 
values so I could spot them with nam?

(I am very new with ns/nam)

Many thanks in advance,
Alexandros