When a non-opaque scene fill color is used with a stage style other than `StageStyle.TRANSPARENT`, the actual fill color is always white. This doesn't work well when the scene uses a dark color scheme. A practical solution is to allow non-opaque scene fill colors, and blend them on top of a white or black background (depending on color scheme) to derive an opaque color that adapts intuitively to the color scheme.
To test this, simply create a scene that uses a non-opaque fill color and observe the scene background when the color scheme is changed. This PR includes a system test, run it with: ./gradlew -PFULL_TEST=true -PUSE_ROBOT=true :systemTests:test --tests test.robot.javafx.scene.SceneFillTest.testSceneFill ------------- Commit messages: - Adjust scene background to color scheme Changes: https://git.openjdk.org/jfx/pull/2068/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=2068&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8377426 Stats: 164 lines in 5 files changed: 155 ins; 0 del; 9 mod Patch: https://git.openjdk.org/jfx/pull/2068.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/2068/head:pull/2068 PR: https://git.openjdk.org/jfx/pull/2068
