test.tmLanguage.json

{
  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
  "name": "True/False Grammar",
  "patterns": [
    {
      "name": "keyword.true",
      "match": "\\b(true)\\b"
    },
    {
      "name": "keyword.false",
      "match": "\\b(false)\\b"
    }
  ]
}