> However, we could be in a situation where we have understood our behaviors down to particle level, and I would still have no idea how you perceive colors.

I do not see how this is possible. If you can perfectly simulate me you can perfectly simulate any response I will give to any question about how I experience red. Moreover you will have better idea than I do because you could also simulate how my experiences of red will change with time as I gain more experience from seeing red or anything else really.