These are the perfect size & a gorgeous style. I need to buy more for every window! I’ve had mine for months & have not had to change batteries yet. The bulb is definitely yellow. You can get “white” replacement bulbs on the Plow and Hearth website but I just haven’t gotten around to it yet. I think they will be perfect with the white bulbs. Just wish I could purchase some that fit on Wayfair to give them the business or wish I had the option to choose white bulbs when purchasing the window candles.