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[platform-ui-dev] Accessibility concerns with the Toolbar.
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ActionContributionItem is converting Toolbar Icons to B&W by default. I
think this makes it hard to distinguish between some Icons where color is
important. For example, I might have a Drop-down color toolbar item that
displays the last color that was selected as its Image. Converting this to
B&W defeats that.
Also, I think that B&W is not the Platform look and feel. Sure, Internet
Explorer 5.0 did this, but version 6.0 has returned to color. I don't
think Office ever made the leap to B&W.
P.S. ActionContributionItem$ImageCache never releases its B&W Images, thus
leaking resources. In the above color example, the action would constantly
change its ImageDescriptor, causing a new B&W version of the current color
to get created over and over. Even for static Actions, the color Images
are freed once the ToolbarItem is disposed, but the black&white Images
remain in the cache.
