Hi Slider enables you to customize your jQuery and WordPress slider border: color, width, radius, style, shadow and so on.
For more info: http://www.hislider.com/faq/how-to-customize-wordpress-slider-border.html
2. With Hi Slider, you are not only able to create
fantastic jQuery image slider, but can also
customize the WordPress slider border,
including border width, style, radius and color.
In the Design interface, after you choose a
template and skin for the WordPress slider, you
can then click the Custom tab to customize the
slider.
3. Under "Template Settings" or "Slider Settings",
you can find the "Border" setting, and then you
can change the width, style, radius and color.
4. (1) Launch Hi Slider and create a new
project, then add images or videos to
the jQuery image slider;
(2) Border Style: Hi Slider provides multiple
border style for you to choose for the
WordPress slider: Dotted, Dashed, Solid,
Double, Groove, Ridge, Inset and Outset;;
5. (3) Border Radius: Once you change the
border radius, you will see the changes of the
corners of the WordPress slider;
6. (4) Border Color: It's very easy to change the
border color with the color library, and you
can also set the color opacity of the border.