[Webkit-unassigned] [Bug 204541] New: [CSS4 Pseudo] background-color of ::selection should be painted as specified

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=204541

            Bug ID: 204541
           Summary: [CSS4 Pseudo] background-color of ::selection should
                    be painted as specified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: browserbugs2 at gtalbot.org

Test:
http://www.gtalbot.org/BrowserBugsSection/CSS4Pseudo/active-selection-012.html

Expected result:
http://www.gtalbot.org/BrowserBugsSection/CSS4Pseudo/active-selection-012-ref.html
Background-color should be green (#008000 or rgb(0, 128, 0))

Actual result in Epiphany Technological Preview 3.34.0-32-g514d1bfb6 (WebKitGTK 2.26.1)
Background-color is not green but rather #334C00 or rgb(51, 76, 0)

Firefox 68+ passes this test.

Spec states:
"
  *_For non-replaced content_*, the UA must honor the 
  color and background-color (including their alpha 
  channels) as specified. (...)
"
  coming from
  https://www.w3.org/TR/css-pseudo-4/#highlight-painting

Blink equivalent issue:
https://bugs.chromium.org/p/chromium/issues/detail?id=1018450

I searched for a duplicate and did not find any.

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