I had a look at this M5 the other day and can confirm that the Turners photos definitely do not do this car justice. It is probably one of the best examples that you could find in NZ.
Great overall condition, not super-mint, but obviously very well cared for and totally original as far as I can see. The idea of a grey interior with Violet exterior sounds not so great on paper, but in the flesh I think that it actually works.
It has seude side bolsters (a little rubbed up on the drivers seat, but nowhere near wearing through) and "M-rain" grey fabric inserts. Gear knob would need replacing to tidy it up, and the steering wheel is a little shiny, but otherwise looking very clean and way better than any e34 interior that I have seen recently.
If I owned it, the first thing I would do would be to change the chrome detailing around the side windows to Shadowline black. And probably delete the lower silver grey trim to body colour. And put some proper tyres on it (has some Bridgestone "Sporty Style" Japanese import numbers on it)
I have attached a few slightly better photos.