fix web color error (bug #196) and refactor RunnerException a bit

Files:
modified: /trunk/processing/app/src/processing/app/debug/RunnerException.java (try)
modified: /trunk/processing/app/src/processing/app/debug/Runner.java (try)
modified: /trunk/processing/app/src/processing/app/debug/Compiler.java (try)
modified: /trunk/processing/todo.txt (try)
modified: /trunk/processing/app/src/processing/app/Sketch.java (try)
modified: /trunk/processing/app/src/processing/app/Editor.java (try)