aseprite/data/widgets/outline.xml

<!-- Aseprite -->
<!-- Copyright (C) 2019 by Igara Studio S.A. -->
<gui>
  <vbox id="outline" expansive="true">
    <grid columns="2">
      <label text="@.color" />
      <colorpicker id="color" cell_align="horizontal" />
      <label text="@.bg_color" />
      <colorpicker id="bg_color" cell_align="horizontal" />
    </grid>
    <hbox>
      <vbox>
	<hbox>
	  <buttonset id="outline_type" columns="2">
            <item icon="outline_circle" tooltip="@.circle" tooltip_dir="right" />
            <item icon="outline_square" tooltip="@.square" tooltip_dir="left" />
            <item icon="outline_horizontal" tooltip="@.horizontal" tooltip_dir="right" />
            <item icon="outline_vertical" tooltip="@.vertical" tooltip_dir="left" />
	  </buttonset>
	</hbox>
	<hbox>
	  <buttonset id="outline_matrix" columns="3">
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
            <item icon="outline_empty_pixel" />
	  </buttonset>
	</hbox>
      </vbox>
      <vbox>
	<buttonset id="place" columns="1">
	  <item text="@.outside" />
	  <item text="@.inside" />
	</buttonset>
      </vbox>
    </hbox>
  </vbox>
</gui>