[9] Code Review Request For 8088179: [Quantum] White flashing when opening a stage with dark background

[Chien Yang]

Hi Jim and Kevin,

Please review the proposed fix:

JIRA: https://bugs.openjdk.java.net/browse/JDK-8088179
Webrev: http://cr.openjdk.java.net/~ckyang/JDK-8088179/webrev.00/

Thanks,
- Chien