There is a similar colour trouser (or pant) in the USA in the shape of Nantucket Reds. You can browse the collection here - I'd be tempted, but most shipments are a hefty $50.
And to answer the question in the title - why not? Pink trousers, pink socks, pink shirts, pink ties - bring them on! If you like a colour, wear it.
[For an alternative and highly entertaining view of red (and possibly pink) trousers, see here. Do you still feel the same way about them?]
|FE Castleberry Collection|
|Mystic River Yacht Club|