The episode, like other 'monochrome' Pertwee episodes, has been a focus as to whether a colour version could be recreated; speaking in the latest issue of Doctor Who Magazine, DVD executive producer Dan Hall said:
This colour recovery has been a miracle, pulling out colour information from black and white film prints. Unfortunately, in the case of Invasion (of the Dinosaurs) Part One, the process has not produced a perfect colour print, but enough information has been salvaged to offer a tantalising glimpse of what the original broadcast may have been like.
As a result, the episode will be presented in the story in its 'clean' black and white version, with the partial colour restoration available as an alternative.
The colour episode will be shown in the form of a special preview for attendees at the forthcoming DWAS convention, Time 5, taking place at Riverside Studios on Saturday 29th October 2011:
To publicise the forthcoming DVD release we are pleased that the colour version of episode 1 will be previewed on the big screen in the cinema.
The trailer for the forthcoming The Reign of Terror - recently seen in Australia - will also be screened during the convention.
(with thanks to Paul Winter)