Color correction filters and graduated filters will affect the white balance setting, using AWB with these filters will result in the camera attempting to correct for the color of the filter.
Nikon Orange Filter (O56) offer greater contrast between sky and subjects than Y-series filters. This filter subtracts green, blue and ultraviolet.
Nikon Amber A2 filter subtracts blue thus correcting bluish colorations that sometimes affects daylight film. The mid A2 warms scene shots on cloudy days or in the shade.
Nikon Blue B2 filter subtracts red while cooling down colorations. The B2 is used with daylight film to remove the reddish tinge from sunrise and sunset shots.