I've been collecting FSBE II stuffs for 3 years now, and I noticed that CB color also depends on what year the pouch is manufactured. Well, in this case EI pouches, the CB color from 2004/2006 dated (green label tab) is very different with 2007 to 2010 dated (yellow label tab) which looks more yellowish. But I noticed also, that 2007-2010 dated EI pouch, compared to Flyye latest CB color, is almost identical.
Well, If you buy the replica I would suggest you not to buy from different brand such as mixing between PANTAC and Flyye, they have their own type of CB color tone.
sorry if this bumpin'' old thread, I mean no harm, just want to share