message: Make the text behind the selection visible
diff: background: $terminal-selection-unfocused-background-color
  }
  +.ace_marker-layer {
  + mix-blend-mode: screen;
  +}
  +
  .ace_marker-layer .ace_bracket {
  margin: -1px 0 0 -1px;
  border: 1px solid rgba(255, 255, 255, 0.15)
  