Hi!
I had some free time so I made few enchamcements to the CodeLab.
Because I didn't have lots I couldn't make changes to the code editor but I did have enough time to add few UI tricks, better visual styling, TaskDialog and few other things.
I also included one banned 'System.Reflection Hack' to use PdnToolStripRenderer from PaintDotNet.exe in MenuStrip (See /* <UI Hack> */)
If you don't like it just remove it.
I call the result as CodeLab 1.9 Alpha 1 and I am very sure that someone will like it.
I also made some tests an it looks like I didn't break anything.
Here is source: