The .empty svg rule (styling the OrdersIcon/BasketIcon) was a plain
descendant selector, so it also matched — and, with higher specificity
than inherited color, overrode — the backdrop's own food-icon svgs
nested inside the same .empty box. Scope it to a direct child (> svg)
so it only targets the actual empty-state icon.
Also expands the backdrop palette from 3 to 6 colors (adds basil,
berry, and cocoa) for more variety across the icons.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>