Don't know, ours get pulled in and put on the walkround as soon as we leave the marina. We don't stow them away though, can't be bothered to untie them and we'd struggle to find space for them all. Ours are white by the way.
Some mobos are a bit tricky to walk round the foredeck so that might explain why some leave them out.
I'm sure I've seen a fair amount of raggies with fenders permanently over the side though!
'I will not be pushed, filed, stamped, indexed, briefed, debriefed or numbered! My life is my own!'