I would suggest warm white for a bedroom.

HI -- Those look like kitchen fixtures not for bedrooms . Warm white on dimmers .

A natural light LED bulb is best for all rooms

I think it really depends. I wouldt say natural light is best all the time. If you keep lights on during the day, then ideally that light should match the daylight coming in. But when it gets dark the cool artificial light can seem harsh depending on your decor and tastes and room. It would be perfect if you could change the color temperature to warmer as it gets darker outside.

Sorry, the lights you show do NOT look like good bedroom lights. Maybe something like these pending your style:)

Ansmith 3-Light Semi-Flush Mount Aged Kinston Bronze Beige Linen Fab · More Info

Semi-Flush Mount French Empire Crystal Chandelier Crystal · More Info

Palmer 3-Light Semi-Flush Mount, Palladian Bronze · More Info

You might like something more like in our design below. Notice how these semi-flush mounts are in the bedroom and outside of one we did?

Leeward Renovation - Bedroom · More Info