Painting everything in your exposed basement ceiling a warm white will make beams, pipes and cables blend in. Apply a primer to any raw wood, metal, or plastic areas first.
You could instead paint your ceiling in a moody matte black with warm undertones to help disguise ductwork and cables and create a cozy, enveloping vibe.
Spray painting saves time, gets in all the crevices, and yields a smooth finish. Protect everything you don't want sprayed, and use dry fall paint to minimize splatters.
Leave your ceiling beams raw for a vintage look, and stain or oil the wood to deepen its color. Be sure to sand down any uneven exposed joists to avoid dust accumulating.
Beadboard between the beams looks attractive and allows for soundproofing. If you have insulation installed, nail strips of beadboard inside the joist cavities.
To ensure the ends of your boards don't absorb moisture, apply a coat of primer onto the cut ends before installing them, and use a laser level to line up the beadboard grooves.