After pressing start, navigate among the different categories by pressing the buttons on the top. When you are done choosing your dragon's appearance, press the arrow in the top right to go to the sliders that change the colors. Drag and drop: If you decide you no longer want something you have dragged out, drag it back to the white bar on the side.
Credits to @fallingstars5 ! Y'all i hate RainWings, but EVERYONE IS OBSESSED. So, i decided to make one. Here you go. HAPPY NOW? OH WOW MY PROJECTS ARE C R I N G E LOLL