Changing
border
All
the elements except Text and Straight Line have border width and border color
properties. You can change the border width or border color by opening their properties window. Double click on an
element(or select the element, right click on it and choose properties) to bring
up the properties window. Now in the Border section - select a new border color,
border width or border style
.
For line elements, you can open up its properties
window and change line color, line width or line style.