Bluish objects after changing screen resolution in-game

If I let the user change screen resolution (using Screen.SetResolution() ) some objects end up being tinted blue and others flash. It doesn't seem to be a reflection probe problem because the affected objects generally have a very low reflectivity and hence would be the least effected by a munged reflection probe. Anyone know what causes this and how to prevent it? Re-loading the geometry solves it, but that's a drastic method if the player changes the settings during a level.