[crazykay]

The shape library's pictures were grey, so the list said nothing about the colour a shape would land in. Every library entry now wears the colour a new shape of its kind starts with: the catalogue's own, or the colour saved for that kind under Shape defaults.

• The grey render keeps its shading: a colour layer, masked by the picture's outline, multiplies over it.

• • It works in the normal list, in the icon-only size and in light, dark and graphite themes.
• • shapeAssetColor() in shapeCatalog.ts is the single rule and is shared with makeShapeFromAsset(), so the picture cannot drift from the body that is added.
• • Unit tests in shapeCatalog.test.ts; the graphite theme stylesheet was regenerated.
    Validation:

• npm test: 2806/2806

• • npm run typecheck
• • npm run export: static export succeeds
• • Checked in the dev server in light, dark (graphite) and icon-only menus; added a box from the list and confirmed its colour matches the tinted picture.