Asking for colour photographs is fine but not realistic. Into 1970's official photographs in particular a "study" were black and white. 1969 at the railway establishment I worked the official photographer was the chief draughtsman - I was the 19 year old boy who carried the huge tripod camera and the chief carried the plates. 1970 a new fangled Polaroid was obtained but it was only used to photograph accident scenes, but the boy still attended to carry the camera for the chief
If you want sand (and yellow) Land Rovers then you need Bob Morrisons British Land Rovers in the Gulf ISBN 1873564023 - but due to the nature of the landscape and vehicles - can you call it a colour photograph book ?
You already have RAF Yellow and Red L'wts. UN White L'wts.
What was the point of taking loads of photographs of lines of hundreds of green/black dp Lightweights lined up on the runways at MVS (Lichfield) on a overcast drizzling day in February - I could find no reason at all at the time and that was not just the cost of 35mm. Now in retrospect - I wish I had taken loads , in particular of the rare and oddbods.
Use of camera at auctions (including viewing days) was frowned upon by all. To try and enter a Army or RAF base that I used to attend on business would have been a stupid act - to pull one out without any prior permission would have been most stupid , now the authorities seem to have given up on the army using realtime phone/camera for whatever !
Regarding use by 321 EoD of the Lightweight , - useless heresay without documentary evidence and authentic photographs will always be be best for any research.
I have always had a interest in RM Lightweights , probably the best write up was in the club Newsletter Issue 102 Dec. 2008 by J.E.S. Bradshaw Long Range Vehicle Patrols by Lieut. M.N. McMullen , RM
From now on - any research is going to be time consuming , we know there were gloss black MP L'wts with Berlin Brigade , 2 photographs only.
There is no photograph at all of a Royal Navy livery L'wt that I know of, but it should be possible to shake out.
Why did the GS L'wt come about in such quantities to swamp the 88" CL when IIRC it cost more than twice as much. Well I know what I was told by Solihull Technical staff about 1980 , - the concellation of orders and non-delivery of those already lined for production to certain middle east countries - but of course that is just heresay. I was told the change of loose locker lid covers over petrol tanks and introduction of seat base cushion retainers was because a certain middle east country would not accept the thick alloy lids screwed to the seat bases. These contracts were then taken up by the British MOD along with the decision to rationalize all seating to that spec. for future contracts