You cannot anodize bolt pin but if you want to change a color threr is another way - galvanizing / in Poland I will use service of that company http://www.galwax.com.pl/zlocenie.html
You cannot anodize bolt pin but if you want to change a color threr is another way - galvanizing / in Poland I will use service of that company http://www.galwax.com.pl/zlocenie.html