I couldn't resist because when I tried 3.1.1 I saw some nice looking indicators. However, they are the wrong colour! I know you're going to roll your eyes but in reality the colour means a lot to people and gives special meaning. I used to do mil spec design and I came to realize these guys really know what they are doing. I'm copying you a table from MIL-STD-1472F that you should apply to the colours you use in the buttons and led displays. Hope you appreciate it. Keep up the good work.