def METHOD_NAME():
    addon_name = sverchok.__name__
    addon = bpy.context.preferences.addons.get(addon_name)
    if addon:
        prefs = addon.preferences
        sv_node_colors = {
            "Viz": prefs.color_viz,
            "Text": prefs.color_tex,
            "Scene": prefs.color_sce,
            "Layout": prefs.color_lay,
            "Generator": prefs.color_gen,
            }
    else:
        sv_node_colors = default_theme
    sv_cats_node = {}
    for cat in get_add_node_menu().walk_categories():
        for elem in cat:
            if not hasattr(elem, 'bl_idname'):
                continue
            try:
                sv_cats_node[elem.bl_idname] = sv_node_colors[cat.name]
            except:
                sv_cats_node[elem.bl_idname] = False
    return sv_cats_node