A CMYK document (file.new {colorMode: "cmyk"}, Document::new_with_mode)
starts with CMYK default swatches (default_swatches(model)), and RGB
colours and gradient stops applied to it are stored as CMYK (Gray stays
Gray) unless paint.setFill/setStroke get keepModel; the Color panel keeps
the model picked on its sliders. RGB documents keep colours as given.
Harmonies and Color Guide variations keep the base colour's model, Recolor
Artwork the replaced colour's, and Edit Colors blends between models take
the document's, through a shared Color::in_model / keep_model.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
While a mask is edited, the Transparency panel and its commands act on the
masked object (Release leaves editing first). Mask commands and
transparency.set take ids and work without a selection; Make Opacity Mask
with one object adds an empty mask and enters editing. Opacity is 0..100 in
every command. transparency.info reports the panel's values with null for
mixed ones, shown blank. Saves and exports never include the editing layer
(Document::without_edit_modes; mask_edit is not serialized).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
