The fact that the buttons doesn't change colors in Cuety remote when used with Cuelux is a known bug, it will be fixed in a next version of it.
I am not sure I understand your question about the delay.
In both cases, doing a long press on a playback or clicking on the "release' button and the on the playback should release the playback instantly.
Maybe you have a "release" time set in your playbacks in Cuelux?
I answered your question about the blackout button in our other post. There is no blackout button in the Cuety remote. In your other post I did not notice this was related to using Cuety remote with Cuelux, so the solution I gave you creating a solo Playback cannot be used in Cuelux as there is not this option in Cuelux. Sorry about that.
I hope this will help you anyway,
Enjoy
