I have a feeling that this'll be the result of a request that appeared somewhere on the web - think it may have been an Airfix modelling site - that people contribute ideas/designs for a special paint job on the tail - TM's cheap option. This was done in 2012-13, the notion being that a design could be chosen, costed and then approved by their Airships during 2013 and painted onto the aircraft for this year's airshow season.