Clicking a fill or stroke row runs appearance.setActiveItem; the toolbar,
Control bar and Properties proxies and the Color, Swatches, Gradient,
Stroke and Transparency panels show and edit that item, and the gradient
tool's annotator follows it. paint.setFill/setStroke, stroke.set/
setAdvanced, paint.editGradient/setGradientGeom and transparency.set take
item (omitted: the active item, null: the top one). Item edits and the
appearance.* commands address the selected objects' own stacks, so a
group's own fills no longer leak into its contents. Any selection change
clears the active item.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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