Zetec2 and FED - of course!!
My only excuse is aging memory and the blue tablets!! FED's exposition of the Sycamore's eccentricities was superb. From the winching point of view it also had the disadvantage of the exhaust (mega-hot!!) being in EXACTLY the right position to fall naturally to hand as a hand hold when approaching the cabin on the winch ... spoken from personal experience
Re. colour - I've just had a look back at one of my B&W shots from that period - not definitive but looks as though it is NOT yellow.
Re having a Nav - although characterised as such, the role was actually much more a winch operator. When K'sar first got their Sycamores, there was a shortage of Navs so we (Valetta 'siggies') were offered a chance to fill in for about 3 months - combining with the Valetta work. Three of us had a go - self, Jeff Wigley and Brian Fletcher - fascinating and great fun
