His third album Change Colours was released in 2015. Mastin’s single “Good Night” reached #1 in Australia where it reached 5x Platinum and also reached #1 in New Zealand. His single “Shut Up & Kiss Me’ reached #1 in New Zealand and #2 in Australia. Mastin’s single “Shout It Out” also reached #1 in Australia. He won two ARIA No. 1 Chart Awards for No. 1 Single in 2012.