In bucket, mix 1 part brickie’s sand to 2 parts cement.
Mix 1 part oxide powder to 3 parts water. Gradually add oxide mixture to cement mixture and use trowel to combine into a pourable cookie dough-like texture.
Fill light fitting to brim with concrete. Gently tap sides to remove air bubbles and settle cement.
Set aside and allow to set for a day or two. Be careful not to bump it to ensure a smooth finish.
Once dry, place sphere in empty bucket. Wearing gloves and safety glasses, lightly tap fitting with hammer to break glass. Scrape off any adhered glass with claw of hammer.
To create an aged look, roughly scrape surface of concrete with scutch hammer.
Mix one part cream acrylic paint to three parts water. (You’ll need about 1 cup of paint solution per ball.) Use brush to flick paint on sphere – the more random the splashes, the better! Allow to dry overnight before positioning.