Car looks like a steal ,, Paint and interior look lovely
Really? Id say that the drivers side rear 3/4 and the door are a completely different colour!!
Personally, id certainly go and have a look, if only to get a feel for the car, & confirm whether the above is a major issue or whether its just poor photography. Depending on history etc, id then offer £5500, expecting to pay £5750, perhaps including 6 months tax.