IMP_APPEARANCE_WILL_UPDATE_BEGIN

IMP_APPEARANCE_WILL_UPDATE_END

IMP_APPEARANCE_DID_UPDATE_BEGIN

IMP_APPEARANCE_DID_UPDATE_END

IMP_APPEARANCE_VIEW_WILL_UPDATE_BEGIN

IMP_APPEARANCE_VIEW_WILL_UPDATE_END

IMP_APPEARANCE_VIEW_DID_UPDATE_BEGIN

IMP_APPEARANCE_VIEW_DID_UPDATE_END

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  // Override point for customization after application launch.
  appearance_initialize();  
  appearance_update([AppearanceConfig configWithPath:[[NSBundle mainBundle] pathForResource:@"them1.json" ofType:nil]]);
  return YES;
}

...

AppearanceView *aview = [[AppearanceView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
aview.appearanceConfigKeyPath = @"key1";
[self.view addSubview:aview];
appearance_wants_update(aview);

{
  "appearance":"Theme1",
  "key1":[
    ["setBackgroundColor:", [{"v":"255,100,255,0.8","c":"UIColor"}]],
    ["setTag:", [{"v":10}]]
  ],
  "key2":[
    ["setFrame:", [{"v":"{{20, 30},{50, 60}}"}]],
    ["setImage:", [{"v":"bundle://[areas.bundle]/oreo.jpg", "c":"UIImage"}]]
  ]
}