Building next generation UIs in Flutter YouTube: How to build next-gen UIs in Flutter codelab GitHub Steps Get started Add starter code Go tag Go main Paint the scene Add assets to the scene Go tag Go main Add an image coloring utility Go tag Go main Paint in color Go tag Go main Add a UI Add a title Go tag Go main Add the difficulty buttons Go tag Go main Add the start button Go tag Go main Add animation Fade in the title Go tag Go main Fade in the difficulty buttons Go tag Go main Fade in the start button Go tag Go main Animate the difficulty hover effect Go tag Go main Animate the color change Go tag Go main Add fragment shaders Distorting the title with a fragment shader Go tag Go main Add the orb Go tag Go main Add particle animations Add particles everywhere Go tag Go main Add particles everywhere — even the web Go tag Go main