I adore orange. The scent. The drink. The idea of a walled orchard with nothing but Citrus × sinensis trees, blooming white in spring. And I love the colour on some people. And in some places. Marrakech medinas, for example. And Palm Beach in summer. (See Elle's gorgeously sexy frock below.) Orange is tropical. Fresh. Flirty. Romantic. It's the colour of candlelight. And sorbet. And the Palm Springs sun. It brings to mind summer nights and sun-kissed skin and cocktails with giant paper…