Hi again. Your room is modern, contemporary and elegant and I'd definitely look to soften the look with a pendant light. I can estimate the size of your room and I agree with you, keep it simple and stylish. Quality, is your key here. I'd be tempted to look at glass, something that's reflective or that's clean (non-fussy looking) as you have a lot that's 'talking' in your room. Some ideas would be... https://www.desreshome.co.uk/lighting/pendant-lighting/industrial-style-white-dome-pendant-light https://www.desreshome.co.uk/lighting/pendant-lighting/antique-bronze-wire-beehive-pendant-light maybe white or grey too https://www.desreshome.co.uk/lighting/pendant-lighting/large-glass-dome-pendant-light this large glass dome (see the smaller size for a better picture) https://www.desreshome.co.uk/lighting/pendant-lighting/copper-ball-pendant-light https://www.desreshome.co.uk/lighting/pendant-lighting/glass-cylinder-pendant-light - we have a larger one than this but not on the website - see the three glass cylinder pendant light on the website https://www.desreshome.co.uk/lighting/pendant-lighting/white-gloss-dome-pendant-light https://www.desreshome.co.uk/lighting/pendant-lighting/contemporary-bubble-saucer-pendant-light The size of your light will depend on your room and all lights can have the cable drops made shorter. Hope this helps a little :)

Definitely had a glass shade. What your looking for is a replacement with a neck so the lip sits on top of the screws. This site has a good selection but double check the diameter of the fitting: https://jmoncrieff.co.uk/John-Moncrieff-replacement-glass-light-shades/John-Moncrieff-clear-globe--with-neck-in-various--sizes- Ebay is a good source for replacement shades as well.

Dulux light and space paint are coloured already with special light reflecting articles. The paints are all light colours.

A smart home system can either be hardwired (so basically the lightswitches and sockets themselves are smart. Lightwaverf is an example), or the individual bulbs and plugs themselves are smart (like Philips Hue, TP-link Tapo and so on). I have a mixture of both, and there are pros and cons to each. It is worth bearing in mind that the protocols for controlling smart devices are evolving, and the new ‘Matter’ protocol is intended to allow different smart devices from different manufacturers to be compatible with each other and better integrated with the various controlling apps. So if I were starting from scratch I’d be looking at individual smart devices (which can be added to in an adhoc fashion and more easily updated than hardwired systems) which are Matter capable.