Question about color code

Moin an alle I have a question about the color code. In the vehicle light under R there is nothing and under 11 is yellow, which is not correct in any way. The Volvo is silver, but not normal silver, but more so….yes, how can I say…it plays a little bit into the golden, but only very little. The color also looks different in the case of sun exposure or shadows. At that time I was called “moonstone pearl effect”. Can one more help me. I would need the code because I paint la I’ll say thank you.