Yes i know RAF color is CG, but i dont skip RAF color, and 37200 was the closest match. I seen other group photo and IMHO the Austrian Typhoon color is not same than Luftwaffe color. Rather greyis than bluish.
If i build and paint a spanish Typhoon i would use 36231, for Italian 36251 (Close match and can buy this color), 35237 German, Cam, Grey for RAF and maybe 36270? for Austrian.
Your paint chart is a good match for that photo. The German colour is correct (I know it's 35237 for certain) and the Italian colour ties-in with what most of us already suspect. The RAF colour is incorrect, however. RAF Typhoons are RAF Camouflage Grey, not FS37200. That is straight off the painting chart for the jet. 37200 is an approximate match, but it is not a match.
The only way to know the colour of the Spanish jets (or any of the others) for certain is to check the painting drawings.