What Exactly is a Pumpkin? - Clarification Please

[Alien]

I have heard reference to a GE Dash 9 in BNSF Heritage 2 / Premium Heritage livery being a 'Pumpkin', but what does this nickname cover? Is it just Dash 9s in BNSF Heritage 2 or is it all BNSF locos in Heritage 2, BNSF GE locos in Heritage 2 or some other permutation? What is required to qualify as a 'Pumpkin'?

Thanks.

 

[Bill Anderson]

What is the BNSF Premium Heritage livery?

 

[Damon Hill]

I'd always thought of it as any unit in the new predominantly orange and green paint scheme. GE Dash 9/etc. simply seem to dominate BNSF's roster these days, but old EMD units from as far back as the 60's have been repainted in the new colors.

 

[Alien]

BNSF Premium Heritage is another name I have come across being used for Heritage 2 livery. This would appear to be used on the wide cab locomotives. So is anything in Heritage 2 livery a Pumpkin including SD70MACs and SD70ACes unless it is greatly faded when it apparently becomes a Peachbonnet? Does the nickname go with the livery or the locomotive type?