Lighting - 1. Changing colours (Groups of light at same time) - 2. floor lighting

Getting into building. I like lighting up the place, using colours to change the ambience. In that, using a lot of lights it can be painfully slow when changing lighting. A QOL improvement would be is to allow us to assign a switch to each light, and we use a single switch for a group of lights to change colours, and therefore have a few switches that'll change a bunch of lights each. Even though I'm not into effects, you could probably add effects beyond just colours into the lighting via the switches, similar to the RGB in PCs. It would be amazing in playgrounds for people setting a mood, such as a boss fight under red lights brightening at the speed of breathing.

So I have seen people lighting under floors. but I have noticed when doing it myself, I have to use a lot of lights, and it causes a bad moving square patterns appearing that is annoying and not what I was expecting. In that though, it might actually be difficult to fix. It might be easier to just be able to use lighting resources (such as sap, dry grass etc) to infuse glow into the floors or walls that looks like there is lights behind them. You can then allow the floors to be assigned to a switch and we can change the glow whenever we want.