With art selected the picker changed it only on OK. Each new colour now
previews paint.setFill / paint.setStroke on the selection through the
session interaction (the spec is preview: true): OK keeps the last one as
one undo step, Cancel puts the art back. Nothing previews until the colour
first changes, nor without a selection (the colour then only becomes the
default paint, on OK).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mateususaandClaude Opus 5.5
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