Bear in mind that the OpenSky roof appears black in most photos, so this might account for it. If the inspection flap is red, this has been painted by the owner, or at the owners request.
The red seat inserts could be ColourStorm seats, or they might be a custom re-trim. Either way is as good as the other.
However, as there appears to be so much that is non-standard, pay particular attention to the authenticity of the vehicle and check the visible VIN in the windscreen, as well as the one stamped on the chassis plate behind the handbrake (just pull out the little storage compartment).
Cheers,
Mike