Bought these blue lights to put in Christmas candelabra to show my support for law enforcement. I am happy with them but I will note for others that some white light comes through them which reduces the blue. They don't represent the greater opacity of the Christmas bulbs of yore.
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Lamp LED Yeelight Smart LED Bulb 1S, YLDP13YL, E27, 8.5 W, 6500 K
43 Review
Smart socket Yandex with Alice, black
30 Review