message: Fix colours used for the back button in space create menu
diff: @@ -67,7 +67,7 @@ $spacePanelWidth: 71px;
  width: 28px;
  height: 28px;
  position: relative;
  - background-color: $theme-button-bg-color;
  + background-color: $roomlist-button-bg-color;
  border-radius: 14px;
  margin-bottom: 12px;
  @@ -78,7 +78,7 @@ $spacePanelWidth: 71px;
  width: 28px;
  top: 0;
  left: 0;
  - background-color: $muted-fg-color;
  + background-color: $tertiary-fg-color;
  transform: rotate(90deg);
  mask-repeat: no-repeat;
  mask-position: 2px 3px;
  