Green flag and move the mouse. Try and guess which colour goes to which kind of block in Scratch!
Inside the project is a rare 'user id' block, once used in place of 'username.' It can be a hint for what the red one is. No fun fax, apart from: - Why can't you pick a colour from the stage/pen/character for the backdrops or sprites unlike the way you can with pen? - I literally had to add an extension temporarily so I could get Extension Grey.