Oppo is taking style quite seriously. The F9 comes in three colours and none of them are subtle. This is a phone not suitable for spies, you cannot blend in with the crowd while calling in an airstrike. Red, blue and purple are your choices. Which is a good thing in an age of dull (or shiny) black rectangular glass blocks. Huawei did start off offering vivid, pattern-filled colours but Oppo here took it up to eleven.