McCabe Meadows 12x9 oil plein air

What a beautiful morning. I know, I say that a lot. I think I need to adjust my studio lighting. The colors in the field are OK, but the reproduction shots in the studio are coming out warm and almost hot. But that is not the way they photograph. Hmm maybe I need to adjust the light in my studio. White balance the camera? White balance the studio lighting? A combination of daylight fluorescent, incandescent and halogen lights are what I use now. Maybe they are out of balance. Any one know how to check for kelvins with out an expensive meter? I will be striving for a 5200 kelvins that is balanced toward shadowed day light. How to get north light in the basement. Neat trick huh? :-) This painting is not that hot.