Kefir

or to have multiple hearts u need to type: : heart : (no space) example: bind v "say : heart : (no space)" and here ya go

As you probably know (or not) to have a double colored tag you need to write { } and color in it before writing a tag himself..for example: "{blue}Ni{white}De" and here you go you will have multi colored tag, about multi colored name I unfortunately cannot answer because I want to know it myself XD (hope I helped)