I've spent the better part of the winter in a pair of dark-rinse, trouser-cut McKenzie jeans by Raven, and despite their cold-weather associations, had no plans on giving them up for spring. Then I realized that the company makes the same brilliant cut—lean, ever-so-slightly slouchy, and with a leg that's chicly flared rather than clownishly flapping—in a lighter rinse that's perfect for the warmer days ahead. Voilà, transition dressing solved.