Should the interior be painted body colour?
Ive got two different tubs and under the various layers of paint, both are grey behind the seats.
Thanks.

Undercoat? As far as I know all Series were the same inside as out.

There might have been exceptions but I've not seen one

Grey? Mine's a very pale blue under the green.

Inside is usually body colour. Hardtop/Truck cab in Limestone is popular but I guess no fixed rule.

If I may offer a different oipinion...

Yes, they are traditionally body colour and my 109 and 86 are such. However, when redoing the very scabby interior of my 110 (hey, it's a Series IV )I made a conscious decision to go with a light grey rather than the OD it was currently painted or the yellow I plan to repaint it at one point.

Depending on the colour, it may be a bit hard on the eyes - I personally don't like a loud interior so went with a neutral colour that goes fine with the current and will work nicely with future changes.

Alan