Help~~~ Over time, the lights lit one by one in sequence?
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Try using the timer behavior, with the "On Timer" condition turning the light on.
You can either set all the objects to different times from the start, or you can have one timer trigger the next one to start in sequence.
Also you can put the 3 colors in an animation of a sprite, then set the animation speed to 1 and set the loop yes.
https://i.imgur.com/HFFZ1Xv.png