You have mixed lighting.
You can replace the ceiling can lights to match the color temp of the lighting coming thru the windows.
Or you can bring in studio strobes and gel them to match the ambient coming in thru the window.
Then you set your camera WB to the color of light coming in thru the window.
Do NOT assume the light from your windows is at 5000k as you have tinted windows. You need to actually find out what the color tint is so you can balance to it. It could be much cooler than 5000k.
Also note: Unless your windows face north and are sheltered from direct sunlight at all times of the day the color tint of the light coming thru the window may change during the course of the day.
Instead of fighting the mixed lighting, you may want to use it for a special effect. If you color balance to your interior lighting you can let the window lighting act as a blue "rim light" for atmosphere.
I recommend reading the Lighting 101 and Lighting 102 tutorials on Strobist:
http://strobist.blogspot.com/2006/03/lighting-101.html
http://strobist.blogspot.com/2007/06/lighting-102-introduction.html
To learn more about mixed lighting and what options you have to either "fix" or "utilize" it.