tell
According to the whole market nowadays.
There are 3 main STN glasses: STN-gray, STN-blue,STN-YG
And 2 FSTN glases: FSTN-pos, FSTN-Neg
It's more easier when the backlight is on.(white)
STN-gray+ white bl= blue font with white background
STN-blue + white bl= white font with blue background
STN-YG+ YG bl=black font with YG backgroudn
FSNT-pso+ white=withe font with black background
FSTN-neg+white=black font with white background
this one is stn-blue
but this one is FSTN-pos