[Elecraft] Visually IDing NPO/C0G caps in the junkbox

[Tom Hammond]

Folks:

Just received a query from a friend, asking how to VISUALLY identify 
a NPO/C0G ceramic capacitor if it's in your junkbox.

I've heard that NPOs should have a colored band along their top edge, 
but I've not been able to confirm this via any published info, of 
from more than one 'informed' source.

Suggestions are welcome.

Thanks,

Tom Hammond  N0SS