You may have seen the rather striking new addition to the Tube map as previewed by Transport for London (TfL) in December to show the addition of the purple Elizabeth Line ahead of its December launch.
And that royal purple colour has already been featured across the brand new Elizabeth Line trains revealed back in June last year, from the seats to the roundels.
But, the purple has been ditched in favour of yellow on some new trains - only not all is quite as it seems, as these are two multi-purpose engineering trains and a rail milling train, so not for passengers.
A new rail milling train and two multi-purpose engineering trains with bespoke machinery attachments will use state-of-the-art technology when the Elizabeth line comes into use. pic.twitter.com/5uDk1w5XgY
— Elizabeth line