YMMV, but something I discovered is that light colors bother me when they're out of sync with my day-night rhythms. So mine start very warm in color, very gradually shift to pretty cool color temperatures as we approach noon, and then get warmer again into the evening.

My theory is that this gets me what the SAD lights are simulating without any manual effort, and it seems to be working. It also helps me with maintaining a regular sleep schedule in that it turns out I'm not a responsible light-switch user; it's easy for me to leave lights on and be active so late that I then have trouble getting up on time.

If/when I ever have reason to redo all of the lights in my house, I'll definitely go with all bulbs that support at least different color temperatures if not a full range of colors and give this a whirl.

My theory is that this gets me what the SAD lights are simulating without any manual effort, and it seems to be working

Very interesting...