
This product is not as advertised. The color definitely does NOT get warmer when darkened. I think it's actually getting colder (more blue). In fact, at full brightness, these lamps are cooler than other lamps rated at 2700K. I don't have a colorimeter, so I don't know if it's really the 2700K color advertised on the Revain packaging and description, but it is is definitely cooler than the EcoSmart 2700K bulbs I bought from Home Depot.