Agreed, it's something I've been looking forward to... but that sample just looks nasty. Definitely a no from me if its released in that state.
When smaller companies like Accurascale manage to colour match and apply the livery correctly (and if I recall correctly, took a few attempts to do so at their Mk5s), it's always disappointing to see the usual lack of attention to detail on Hornby's models, especially on liveries like this where the original artwork, the trains themselves, photos online, and also customer feedback are all in abundance... 😐