Would it be entirely insane to do a wholesale interior colour change on a 405? There's a lot of bits to colour. Much as I like to have a go at things, I think it'd need to go to a pro. I'm guessing I'd be looking at £1k or more... 2016 Skoda Octavia VRS Estate
<gone>2009 FF Vogue TDV8 Buckingham Blue</gone>
<gone>2015 BMW 520D SE (not my favourite car)</gone>
<gone>2009 D3 HSE Galway Green</gone>

I think an easier route would be to purchase an interior in the colour desired, unless you are after something non-factory or uber rare.

A lot of work for a regular interior, if its an Autobiography with a leather headliner etc, then not impossible but a lot of labour and faffing about, I would think a pro would be far in excess of £1000 for work like that. My last M3 had a re colour (same colour) before I got the car that was absolutely poor and given its relatively small size that was £660 in 2016!

I hadn't considered the headlining, that's a good point. It looks from the photos to be black though. So I think it's "just" seats, dash, door cards and a few other odds and sods.  2016 Skoda Octavia VRS Estate
<gone>2009 FF Vogue TDV8 Buckingham Blue</gone>
<gone>2015 BMW 520D SE (not my favourite car)</gone>
<gone>2009 D3 HSE Galway Green</gone>