[BBC-Micro] Master series welcome (5.25") disks

[Jules Richardson]

Is there any significance in a Master Welcome disk with a white/green label 
versus one with a white/blue label?

I've got a chap who needs a welcome disk, and I seem to have three here - two 
with blue-text labels and one with green. No other version numbers or any 
clues as to whether there's something different between them.

Figured I better ask before giving one away that might be "special" in some way!

cheers

J.