Finally ADC 2 closed, I could have a good night sleep today. Right before the closure, I submitted following changes. 1.Color Picker Sphere now has a small circle showing where to click to confirm selection. Coding OpenGL is fun :) 2. A bit performance improvement. Thanks to the great log/tool making it as easy as ABC. A: Add a log point // Method tracing to "/sdcard/requestPage.trace" Debug.startMethodTracing("requestPage"); //Code's subjected to profiling // Stop Method tracing Debug.stopMethodTracing(); B: Visualize >traceview requestPage.trace C.Working on the hot spots 3.Change webView loading & a few cosmetic stuffs webView.loadDataWithBaseURL(... instead of webView.loadData(... Turns out that loadData() actually loading data as a data:Uri way, which is not really good for some unicode data