Robin the only difference between the VWR branded stuff is the colour.
....That's not how it's been sold to me. In which case it sounds as if VWR are being naughty and I will want some clarification from them.
Well of course they will sell different spring ratings, if applicable to the usage. But why would they sell a set of say for instance a KW V3 with a different spring rating than what KW had spent lots of time and money developing. Yes they order springs with a custom rating for there track cars, and customers like Jonny who know that by having stiffer springs they can get a certain ride height without rubbing, but in general if you order V3's then you would get V3's but in blue. Take a look at Poko's build thread on here, the chap from Israel.
My clubsports came in blue, but i am 100% certain that there is no difference with them form any other clubsport's sold.