For getting the colour temperature just right: I have smart LED bulbs in my apartment, that can scan through a wide range of off-whites. If you get those you can dial it in without buying a bunch of different bulbs. They also have dimming so you can get the brightness how you want it. I would recommend getting 3 if you want a decent sized room to be bright everywhere. Not sure if that's a typo on "10 foot square room" since that would be less than 1 m^2 which is closet sized. Also I wouldn't worry about what colour you paint the walls as long as it's some sort of white.