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JUMLY can change arrow style


A JavaScript library, JUMLY, is to render UML sequence diagrams. It can change styles whatever you want even arrows.

Here is a simple example.

On the other hand, here is a styled one.

Here is the style. Put this in your <style>

.sequence-diagram .message svg.arrow line {
  stroke-width: 3px;
  stroke: #8bc84b;
  stroke-dasharray: 8, 4;
.sequence-diagram .message svg.arrow polyline {
  stroke: #8bc84b;
  fill: #8bc84b;

As you can see, arrow is rendered with SVG. So many properties are prepared. In detail, please see here, http://www.w3.org/TR/SVG/styling.html#SVGStylingProperties.