Traffic lights
Create an app that can toggle traffic lights. On first start, the color of each traffic light must be off. This can be done using the alpha property. For example, to set values for a red traffic light, you can set the alpha property of your outlet, which is responsible for the red signal, to 0.3 - this is the color brightness (transparency) value from 0 to 1.
By pressing the "START" button, the red light should light up, and the button title should change its value to "NEXT". Subsequent pressing of the "NEXT" button should change the active color to the next one in order. Thus, each subsequent click on the "Next" button should sequentially change the traffic lights.
Minimum tasks that you must solve: Prepare the application interface with an eye on all current devices Make traffic lights round