just found out that we can flash the Hue lights! in Color!
@D34DC3N73R 's thought are correct, first turn_on the light, and then use a service call:
flash: long
entity_id: light.kayon
color_name: red
Had transition in there before too, but that can be left out. The order doesnt matter (at least not in the developer-tools/service.
wait for the 15 flashes cycle to finish and one can change color (or not) and click call service again.
This can be scripted in a cycle probably
Will repost this in the latest blog on 2021.1, since I raised a New Years resolution…
and the solution is there: 2021.1: Happy New Year!
happy flashing!