The First HDMI Cable With RGB Effects Costs Just $80
Amazon.com: ProtoArc 8K RGB HDMI Cable 6.56ft, 48Gbps High Speed HDMI 2.1 Cable for Gaming Braided HDMI Cord with LED Light, 8K 60Hz HDR, 1080p, 3D, eARC Compatible with Monitor PS5 PS4
HDMI cable with RGB lighting for up to $200, because why not?
R43 59 1/8in Video Cable HDMI Male To 3 Rca Plug RGB Audio Video Av Cable TV | eBay
HDMI to Component Video Converter,HDMI to Ypbpr Scaler HDMI Input to 5RCA RGB Video + R/L Audio Output Converter Adapter Support up to 1080p for PS3 DVD to Old TV - Walmart.com