Please see our blogs on lighting, we hope they inspire and help you. https://www.lighterest.com/ buying guide Kind regards

which option is better ?

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.