def generate_tm_coloring_json(gen_path, textx_ls, env):
    template = env.get_template('coloring_json.template')
    lang_name = textx_ls.configuration.language_name
    coloring_file_name = lang_name.lower() + '.tmLanguage.json'
    coloring = ColoringVSCode(textx_ls.configuration)
    with open(join(gen_path, 'syntaxes', coloring_file_name), 'w') as f:
        f.write(template.render(coloring.get_coloring_model()))