Problem solved. We just went back on our antipsychotic and psychotropic medications and figured it out for ourselves. We think the answer may be.........tungsten bulbs are red shifted. Blue gels are used in front of the lights to brings the color balance back to white. So, back in the old days of color film, blue was the fix for indoor/artificial lighting. Same goes for video/motion picture lighting. Nowadays, the digital world corrects color balance. On the type of film used, Kodachrome was the best color rendition while Ektachrome could generate a BLUE cast if not perfectly exposed and development temperatures weren't held to +/- 1/2 degree. I developed and printed B/W back in the 60's, then tried color. Gave up on processing my own Ektachrome due to the blue cast. But what would we know?