MB Green or Brown grease???

Hey All

I just replaced my front wheel bearings and packed them with the green disc-break wheel bearing grease that MB sells. After I was finished, I noticed that the paper MB manual says to use the brown grease to a year breakpoint that comes right after mine (87 300E).

So is there really a difference? Do I NEED to get that grease out and re-pack with brown? (I know it says that you cannot mix the two)

Normally I would have just used any high temp disc brake wheel bearing grease, but I wanted to do it the MB way.