Can these lights be used to cycle colors when used on a timer and if you can when the timer goes off and turns back on will it be the color you had it on previously or will it change.

Yes the Pure Colors Bulb can be used to cycle colors with a timer and it does have memory so if the light is turned off for more than 20 seconds then the next time the light is turned on the light will remember the last color show it was on.
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