I have been performing some experiments with the double slit quantum eraser. I mark the "which way" path with linear polarizers (arranged orthogonally) before the red laser light passes through the double slit. When I perform the experiment without the quantum eraser (when a "particle" pattern is observed), the laser pattern still appears red on the wall. However, how would "red" be conveyed if the light is acting as a particle? Shouldn't it not carry a "red" wavelength if it is a particle? Could it be something to do with it being absorbed and re-emitted by the wall as a wave at that point?
A similar question was somewhat covered here, but not directly asked or addressed: