gets a 4 imo, its been done before you just put it in a dialog, WOW?

if (%bomb) {
      set %colour 1
      display You have picked the colour Red!
    }
    else did -ra Bomb 1 You have not turned on the bomb yet!
  }
  if ($1 == blue) {
    if (%bomb) {
      set %colour 2
      display You have picked the colour Blue!
    }
    else did -ra Bomb 1 You have not turned on the bomb yet!
  }
  if ($1 == black) {
    if (%bomb) {
      set %colour 3
      display You have picked the colour Black!
    }

This could be like 9 less lines and you dont need such bracket abuse.