In the school I was impressed with the following experiment: there are two polarization filters with orthogonal polarization directions placed at a distance from each other. They do not allow any light through.
Then the experimenter inserts a third filter oriented at 45 degrees, the whole system starts to conduct light, with strength of about 1/8 of the initial source.
Now, my question is: does the same happen with color?
For instance, initially one filter is purple while the other one is green, of opposite colors and do not conduct light. Then a medium color filter is inserted in the middle, will the system conduct more light?
What if instead of RGB space we use wavelength, initial filter for blue light, the other for red, and the middle filter for green?
If not, why it works with polarization but not with wavelength?