The challenger has OEM factory white halos / DRLs.
The DRL boards convert those OEM halos to multicolor, while the halo kit replaces those halos completely.
The halo kit is slightly brighter, while the DRL boards give an OEM look when off.
2015-2024 Dodge Challenger RGBW DRL Boards – RGB Halo Kits
2015-2024 Dodge Challenger Headlight Halo Kit – RGB Halo Kits