Now that men have become accustomed to chinos (again) it only makes sense that they'd eventually try different colours. And, despite navy's long standing popularity, it appears like olive is the next colour of chino that designers have latched onto.
We can see why, as far as ease and wearability goes, they're up there with denim and beige chinos. Here's an example of just how versatile they are:
1 Olive trousers by Oliver Spencer: oliverspencer.co.uk
2 Universal Works Knit Jacket: www.my-wardrobe.com
3 Common Projects Grey Achillies trainers: www.tresbienshop.net
4 Nigel Cabourn Naval shirt: www.nittygrittystore.com