Amazon has the 2-Pack GE CYNC Tunable White A19 Smart LED Light Bulbs (‎93129684) on sale for $13 with free shipping on $25+ or with Prime (extra 5% off for 5+ S&s orders). 

Can adjust white light to any color temperature between warm, amber light (2000K) and cool, bluish tones (7000K). Not full color bulbs.