The all white UN Sioux were I think the last Sioux to undergo major inspections at Wallop.
Just after they departed I was given the job of removing all the spare doors held on the major line and destroying them by bending them double between the gate post and the wall of the scrap metal compound.
Due to the differences in bubble shape a large number of doors were held and for each major the best fitting doors were selected by trial and error.
Looking at the photos above I would suggest that at least two different colour schemes were used in Cyprus with the all white being the last.
Not sure how long they served before being replaced by the Alouette 2.