Image: OnePlus To sign up for our daily newsletter covering the latest news, features and reviews, head HERE. For a running feed of all our stories, follow us on Twitter HERE. Or you can bookmark the Gizmodo Australia homepage to visit whenever you need a news fix. Apparently OnePlus is turning its habit of releasing concept phones every winter into a tradition. Following last year’s Concept One, OnePlus has just revealed the OnePlus 7 T Concept. Sporting what looks like tiny pools of water on its back, the OP8T Concept is quite a departure from both the standard model and last year’s leather-backed prototype device. Inspired by the Turkish hot springs of Pamukkale, these little pools actually contain a colour-changing film that uses embedded metal oxides to change colours depending on the amount of electric current running through them. This allows the colour of the film on the OP8T concept to change from silver to blue at a moment’s notice.