[KLF] Orbital's debut CD - with a pink cover? (OT)

This is a quick question for any serious Orbital heads out there - I saw a copy of the so-called "Green Album" (on CD) in a second-hand shop today. However, rather than having a yellow-green background with a red-pink logo, it had a red-pink background and a yellow-green logo (the back sleeve was yellow-green though). Is this rare? Or am I over-looking something (like, it's the back cover of the inlay sleeve or something?) Any ideas? John