RFR: 8361193: Test java/awt/Mixing/AWT_Mixing/MixingPanelsResizing.java fails on MacOS X [v2]

[Khalid Boulanouare]

> Sets setOpaque for lightweight, and uses a compares colors with tolerance in MacOS X machines.

Khalid Boulanouare has updated the pull request incrementally with one additional commit since the last revision:

  Adds extra space after if
  
  Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26166/files
  - new: https://git.openjdk.org/jdk/pull/26166/files/f02885c6..65b39f02

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26166&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26166&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26166.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26166/head:pull/26166

PR: https://git.openjdk.org/jdk/pull/26166