Uplighting is the fastest way to change how a room feels without building anything.
An uplight is a small fixture that sits on the floor against a wall, a column or a drape and throws color upward. A row of them turns bare walls into a colored backdrop. Behind a stage, they lift the speaker off a dark background so people see where to look.
Spacing decides the look. One uplight every 5 ft gives a full, even wall of color; one every 10 ft gives soft pools with shadow between. For a room of up to 200 guests, that often means 12 to 24 fixtures, plus pin spots on the tables.
You choose between battery and wired fixtures. Battery uplights need no cables across the floor, so they work in open areas and in venues with few outlets. Wired uplights suit long walls near power.