Yep, looks like Sky type S! I think it's a case of different manufacturers giving the colour their own name. I use Humbrol paints and the Their "Sky" is number 90, beige green! I remember the old Airfix range of paints called the colour Duck Egg Blue and so do Revell these days. Tamiya and XtraColour are the only manufacturers I know of that call the colour Sky type "S"! All the shades are a bit different and I try to use the one closest to the colour of the code letters on the kit I'm building and that is usually Humbrol No.90 but I keep most of the others in just in case.
I think Robin Egg Blue is that really pale blue colour that you would use on a BF 109 underside.
My, this brings back some memories. I remember the very first Airfix kit. This must have been over 50 years ago, long before most of you 'orrible lot were thought of. It was a Gloster Gladiator. They sold it in Woolworth's for 2 shillings (that's 10 pence). It came in a plastic bag, no box or anything. The next one was a Spitfire. The only paint we could get at the the time was the new Humbrol range in those little pots.
I remember the first kit I built was an Airfix JU 87. That came in a bag with the instructions printed under the card flap at the top. I remember wanting a Spitfire and my dad got me the Airfix MkIX and I sulked because it had a four blade prop and the colour was green/grey not green/brown with three blade prop like a "propper" Spitfire! That was the first time I ever came across the letters JE-J on a Spitfire.
LOL
