Question

Why do cup cars have a colored piece of looking “tape” on the splitter? (Arrow 1) I noticed where the jack point is there is a red arrow did this correlate anyhow? And the fuel reservoir (arrow 3) also matches color. So is this a style thing or a mandated rule I’m not aware of. I’m fairly new to nascar submitted by /u/Pitiful_Farm_6428 [link] [comments]