Plus the people of Grimsby are used to blue -liveried buses turning up at random on local routes, and indeed various iterations of the Interconnect livery! There was a 250-liveried bus out today (Sunday), I believe on 3's.
Meanwhile as for the alleged fleet replacement, I think it's fairly clear that some of the euro 3 e400s will be staying for the time being. If the info so far is correct there are only six buses left to enter service in Grimsby (19195/6/200/206/210 from Skegness and 10899 which is here but not yet in service), whereas there are 19 older e400s still in use!
Plus a driver has just told me that 21270 is due to be withdrawn, so presumably one of the transfers will replace it.