A printout of these is available on request. Our position is that flags normally employ the 'default' colours unless some good reason can be shown for departing from them. I know the Flag Institute keeps records of officially set Pantone matches and that they have set their own matches for those flags where no official specification is made. For example, the Flag Institute's Pantone matches for the UK flag is Red 032 and Blue 286. But, is a good colour reference.
Blues can be very confusing.
The Israeli blue is as dark as any of the Blue Ensigns shown in the book, and the Greek flag is of a very slightly lighter shade. They both stand in sharp contrast to the light blue of Argentina, Botswana, Fiji, etc. I have a Greek flag made in Greece of paper and it is of the lighter blue shade. The blue colour in Israel's flag is definitely dark. Some time ago I got a folder on national symbols from the Embassy of Israel in Washington.