YUI Library

1. For FAIL and PASS, the label shall be highlighted in shape color instead
of in gray. e.g. FAIL in red and PASS in green.

2. Provide a way to enable/disable showing TestRunner log message only.
When doing development with YUITest, we would want to enable all logging,
but would like to have a way to easily highlight (or include only) the
TestRunner messages

3. At the final report message, display a test of failed test methods
e.g.
Testing completed at Tue Dec 16 2008 01:41:22 GMT+0800 (China Standard
Time).
Passed:1 Failed:1 Total:2

Failed test case(s) are as follows:
1. {test name}: {fail message}
2. {test name}: {fail message}
...

When reading the test result, we are most interested to know which test
case(s) are failed.