Looks like a fantastic setup.
@Jonwillis cheers again for the detailed pics. 1.5cm stuck out should be fine. The slot the PJ screen drops from is 6cm from wall so screen should be between 6.5 and 7cm away from wall when down. My “mood” lights are above the pelmet I made to house the screen and downlights.
@Peterzx6r photo of the HDMI ports
If you are 1cm over both sides, it will stick out about 1.5cm. Check it your plasterboard has metal edging. If not, you might be able to cut into it, as the strength will come from the wooden studs is fixed to.
Yeah, Phillips hue. Sync box way to expensive so I just use a switch by the sofa to pick one of 5 colours. Red, green, blue, purple,b warm white.