These are EIN  STAR.
The price guide lists many colors, but most of them seem to be made by Novelty or Elmer Glass Company. The Brookfield-made pieces tend to be dark aqua with a small, point down STAR. Note that that's not always true, though. The key indicator to look for appears to be the type of the inner skirt. A flat base to the skirt indicates Novelty / Elmer production, whereas a rolled-over outer side to a mold line on the inner side (sort of like an RB, just on the IS) indicates Brookfield production. Again, there are some minor exceptions to that.
Shown are three shades of aqua, shading from lighter to darker.