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Since 2019.02, the type of the button can be added to the toolbar (Icon or Text). Only the ButtonType (in <toolbarTask>) Icon will use the configured <iconFile>. If left blank, it will show the new, default grey-scale icon provided from the code.
Since 2022.02 all PNG/GIF icons are replaced by SVG icons. PNG/GIF icons are still supported for compatibility reasons but they will become blurry when scaled.
The complete set of new, default, grey-scale icons can be downloaded here . See also the table below in the <predefinedDisplay> section.
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