Krosno, in Poland, made hundreds (if not thousands) of different pitcher/glasses sets throughout the 1970s, 1980s and 1990s that were derivative of Scandinavian æstheics and mass-produced. Even in their current catalogue they have designs clearly "inspired" by classic Danish and Swedish stemware.
Most brightly coloured jugs and glasses to be found on the secondary market are of cheap post-1970 Polish origin.
Of course, if you're frustrated by the lack of information on a particular niche in glassmaking you could always do what many on here have done, including myself, and start investigating it properly yourself.
Mod: slightly amended.