The Tuscan is a targa body and the roof and the rear window are both removable for open top motoring . In this case maybe the owner had refitted the roof panel while it was parked up in case of light showers or for security and just not bothered with the rear window.
Once a month there's a Sunday morning "Breakfast Club" meet at the historic Goodwood racetrack here in the UK, with a different main theme each time. This TVR was in the same car park I ended up parked in at this "Soft Top Sunday" themed meet - thankfully it was on the end of a row so it was easy to get a relatively uncluttered shot of it!
Similar to the scheme in your second link is this one, which I got a photograph of. I think it's a green/blue flip, instead of a purple/blue flip like in yours... Can be hard to tell what colours are going on though as it depends on the light and direction!