The idea was to retain reasonable passband integrity but lighten the blue filter so that the total exposure time would be shortened. This set is 23A light red, 57A light green and 38A light blue. These filters have fairly broad passbands but still have stopbands which should give reasonable color separation. It's hard to tell. Not so simple to say.
Color balance is a strong function of exposure time and reciprocity failure often dominates.
Color film can give quite unbalanced color images as well. It is probably best to judge a color image on the basis of its detail its range of colors and its general beauty. These are subjective judgments indeed. Filter thickness is an important issue when taking three color images. The filters must be exactly the same thickness or there will be an image focus shift at the imager.