Amazon currently has the TP-Link Smart LED Light Bulb available for just $29.99. That's good for $6 off of its regular price, and brings it back down to its all-time low price.
This light bulb here from TP-Link is a 60W bulb, so it'll be plenty bright for your home, but it is not a colored one. It is a tunable white one. Which means you do have the ability to adjust the temperature of the bulb, but you can't make it blue. Now this is a smart bulb, and you are able to control it through your smartphone, using the TP-Link app which is available on iOS and Android. On top of that, it does also work with Amazon Alexa and the Google Assistant, so you can use your voice to turn on the lights. But you can also tell Alexa to turn them on a specific time, if you wish to do that instead.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.