Is it possible to assign editor styles to API tokens?

If I define my own API and I want to highlight values, classes and methods of my API in editor. How I can do it? Is it possible to assign some of keyword styles to api tokens?

Here is my instead.lua in api folder of ZBS:

return {
  instead = {
    type = "lib",
    description = "Библиотека INSTEAD",
    childs = {
      tiny = {
        type = "value",
        description = "Флаг «минималистичного INSTEAD», без графики и множества других возможностей."
      }
    }
  },
}

And this is some code snippet:

if not instead.tiny then 
  require "autotheme"
end  

So I want instead and tiny to be highlighted in my code.

You can use keyword highlighting, but while it works for "instead" and "tiny", it will also have to be set for "instead.tiny", which is not ideal (this looks like a limitation in the version of the Scintilla editor component used by the IDE); see this ticket for a related discussion and explanation. You may also check a proposed highlight property plugin that does something similar (although for all properties).