Automated NimbusJTreeSelTextColor.java test which is added under [JDK-8271315](https://bugs.openjdk.java.net/browse/JDK-8271315).
It passes with the recent build of JDK 18. It fails with JDK 18 build 7 where [JDK-8266510](https://bugs.openjdk.java.net/browse/JDK-8266510) is not fixed yet: Exception in thread "main" java.lang.RuntimeException: Unexpected color found: ff000000 at (4, 9); foreground: ffffffff; background: ff39698a - check image.png at NimbusJTreeSelTextColor.checkColors(NimbusJTreeSelTextColor.java:106) at NimbusJTreeSelTextColor.main(NimbusJTreeSelTextColor.java:70) The line is wrapped for readability. In this case the text is black instead of white. ------------- Commit messages: - 8273043: [TEST_BUG] Automate NimbusJTreeSelTextColor.java Changes: https://git.openjdk.java.net/jdk/pull/5269/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5269&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8273043 Stats: 137 lines in 1 file changed: 37 ins; 60 del; 40 mod Patch: https://git.openjdk.java.net/jdk/pull/5269.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5269/head:pull/5269 PR: https://git.openjdk.java.net/jdk/pull/5269