Actually 'new' orders now support a full suite of editing, including shipping changes and application of discount codes after the fact (unfortunately it's only working for orders placed in the last month or so, and going forward)
The EP is a single variant from a tooling suite that has 17 different builds allowed for. Once reach decorated stage we will have each version in this run to share including a range of differences in joins, placement and even glazing.
The blue/grey are the same livery as the first run, so will match / are designed to build longer trains using the missing Mk2c coaches. On the introduction of the 111 Class locos you started to see more Enterprise sets with a BGV at each end while the driving trailers were relegated to secondary services.
It certainly ran around multiple locations for various photos and as these things usually do, a photo of it running in anger is always possible to show up. Sales so far peg it as popular as the best selling green ones so certainly lots of you like the look of it.