A booth light has three jobs: show the painter the true colour, survive solvent vapour and overspray behind a sealed lens, and stay out of the way of the curing cycle.
Body shops lose money two ways on lighting: a colour match that looks right under the booth lights and wrong in the customer's driveway, and a fixture that fails inspection because it was never rated for a spray environment. Both are lighting problems before they are paint problems.
For booth work the specification is clear: colour rendering of 90 or better at a consistent colour temperature, sealed IP66 luminaires with a flat tempered lens that wipes clean, and a rating appropriate to the booth classification. The LB and HB high colour rendering options cover the first two. The booth rating is confirmed per project, which is why the planner flags it before anything is quoted.
Colour inspection and prep 150 fc plus. IES recommended practice, confirm with a layout and the booth classification.
A spray booth is a classified location and the rating depends on the booth and where the fixture sits in it. The planner flags every booth request, and the rated variant is confirmed before a quote goes out.
A CRI 80 source can make a metallic silver read half a shade warm. The painter matches to what he sees. CRI 90 and above at a fixed colour temperature is the difference between a match and a redo.