Thread creep be damned!
As I'm currently musing an F-4D iteration to while away the time until HKM comes up with the goods, I'm looking into USAFE units which featured heavily in the monthly UK aviation and model mags back in the '70s. Although it didn't last long, there were some with the dual colour stencils.
I think a decal sheet with USAFE white codes and unit badges may have been one of the first 1/48th sheets I ever bought across the counter (ModelMark at Plashet Grove E14?). I still have a couple of fragments, but not one with the producer's name on it. Wish I'd had the foresight to get the 1/32 sheet at the time, around when Revell's first big F-4E was released and Ted Taylor's UK tail coded build in Scale Models was the ultimate in plastic modelling to aspire to.
I think it was Aerodecal and I may still have most of two or three 1/32 sets, but imagine they would fragment into a zillion bits of cracked ink as soon as they're immersed in water. The sheets feature jets from Alconbury, Hahn, Soesterberg etc.
Dutch decal feature a Soesterberg E on one of its sheets.
The hybrid stencil birds in USAFE must have gone through Ogden rather a local depot centre, and were not the norm. I have always wanted to do RF-4C 68-555 Triple Nickel when based at RAF Alconbury ca.1976-79 (as it started its career, just up the road from where I lived, at Upper Heyford in March 1969) - though that was without the sprinkling of snow.
I prefer the Omegas with the red tail. Believe it or not, the US Navy tail etc colours followed regulations. I can't remember exactly, but FITRONs had red and yellow, ATKRONS green, blue and orange, and so on. It wasn't just for esprit or morale: it signified ownership of pylons, drop tanks, bomb racks, spares etc. which is why so many items were tipped in colour with the unit number stencilled on.