MDCSlider exposes stateful APIs to customize the colors for different control states. In order to use this API you must enable statefulAPIEnabled on your MDCSlider instances.
let slider = MDCSlider() slider.isStatefulAPIEnabled = true // Setting a thumb color for selected state. slider.setThumbColor(.red, for: .selected)
MDCSlider *slider = [[MDCSlider alloc] init]; slider.statefulAPIEnabled = YES; // Setting a thumb color for selected state. [slider setThumbColor:[UIColor redColor] forState:UIControlStateSelected];