Orion have had a converted train doing the rounds to have its picture took for several months. It looks very ... blue. From
Orion's pages on the ROG site:

The First of Many
18 November 2020
Well here it is...the first of many.
Orion leading the way with specially converted multiple units for the High-Speed Logistics sector.
Here's 319373 on show in the Princess Royal Distribution Centre in north London.
This comes from Modern Railways back in August:
The train is the first of an initial fleet of three units that Orion, a sister company of empty stock mover Rail Operations Group, is planning to introduce into service early next year. The other two units are being converted into parcels Class 769s, with the addition of diesel engines at the Brush plant in Loughborough.
The plan is that the units will operate as eight-car trains shuttling between the port at London Gateway and Liverpool Street station in central London. The ‘319’ will run in tandem with a Class 769 sister unit, with the latter acting as a tractor unit on the unelectrified Gateway branch.
At Liverpool Street, the trains will use platforms 9 and 10, which have road access, with electric bikes and electric vans shuttling the parcels to city centre destinations to add to the operation’s green credentials
Oh dear.