I know that &l makes pet name bold and & a b 1 2 3 etc makes a colour. What if we want a bold red [&4] pet name?
It's either &l&4Name or &4&lName Can't remember which, just play with it. Unless bold names were removed or something that should be it.
Formatting codes always come after the colour. &k- Obfuscated &l- Bold &m- Strike-through &n- Underlined &o- Italic &r- Reset Formatting Eg, &1&l&o&nLyc&rel would make Lycel.
Also for some reason pet name colours disappear when you teleport or something so don't spend too long on pretty colours