I have a set of those... I had them on my 740 estate in Texas and liked them so much I bought a set from the USA to go in my 740GLE estate here in the UK...
Also there were accessories like a Volvo-branded First Aid kit (two or three different kinds I think), Volvo-branded collapsible plastic storage boxes for the boot and the rigid, high-edged plastic floor mats/carpet protectors for the four footwells and the estate load-bay. These were colour-co-ordinated and I have seen them in black, beige and another colour, though can't recall which one!
I've got the floor trays, though not the boot liner one. I don't use them though as I've found they can stop air circulating to the carpet promoting mould! It also makes it hard to spot leaks when the carpet gets wet! Fingers crossed all my leaks are fixed now though.
I've also got a full set of factory tan carpet floor mats, Volvo branded!