Ikea's multi-color smart bulbs are now widely available - The Verge
Flux Bluetooth Smart LED Light Bulb - Smartphone Controlled Dimmable Multicolored Color Changing Lights - Works with iPhone, iPad, Apple Watch, Android Phone and Tablet - Led Household Light Bulbs - Amazon.com
GLEDOPTO ZigBee 3.0 Smart LED Bulb Pro 12W E26 RGBCCT Lights 2200K~6500K White Light 900~1100LM Compatible with Amazon Echo Plus SmartThings App/Voice/2.4G RF Handle Remote Control - - Amazon.com
Ikea's Beautiful New Smart Light Costs Just $10 (But There's a Catch)