bigboss said:
It was definitely RealD as the logo was imprinted on the glasses. The glasses themselves looked black, but if you looked at them sideways, you could see a red hue on the left glass, and a mirrored blue hue on the right.
Maybe you lucked out and got a designer pair!
There could be a colour aspect to RealD's technology, but colour shouldn't have anything to do with circular light polarising methods.
Anaglpyh 3-D systems (red/green or red/blue) seriously distort colour reproduction. Anaglpyh 3-D is cheaper because it's a single strip format (no dual projection system is needed), which is why it was popular with exhibitors during the 1980s. Anaglyph glasses cost almost nothing to produce, too (not that circular light polarising glasses cost a fortune to manufacture). Anaglyph is cheap and dirty, and enthusiasts greatly prefer light polarising systems.
A lot of people think light polarising 3-D is new, but it was standard for 3-D theatrical exhibition in the 1950s, even though photos from the period commonly show the red/blue glasses (think Back to the Future). Anaglyph specs were more commonly used for comics and breakfast cereal promotions.
I'm not sure why I'm saying this, other than to express confusion. To my knowledge, which might be flawed, circular polarising systems such as RealD are sold on their ability to preserve colour integrity; and tinted lenses block part of the colour spectrum.