Beagler,
I have not had a problem with washouts while using a red lens at night. My scope has several adjustments for brightness and I think that will take care of any washout. I have been out several times at night, using a red spot light and the red dot scope. No problems at all. It really helps get on target easy.
I could have taken a Bobcat in Texas a few years back if I would have had the red dot, but since I couldn't see the sights of my shotgun, I missed it. For me at least, the red dot is on that 11-87 to stay, to be used as my night hunting shotgun outfit.
Good Shooting.