Highlight the active thumbnail in WordPress Gallery Plugin

Product: WordPress Gallery Plugin

Question

My clients purchased the commercial version of your plugin on my request and would now like to implement some adjustments if that is possible.

We would like to be able to highlight the active thumbnail using a green colour. We are using the "Media page" skin.

With the present settings it is very hard for visitors to see which thumbnail is active in the gallery. Is there CSS code or additional code that needs to be added to the Advanced Options of the plugin so that this can be accomplished? Can you provide the additional code required to make this possible.

Answer

In step 3, Options tab, Advanced Options, enter the following text to the Advanced Options field:

data-thumbimageborder="4"
data-thumbimagebordercolor="#ffffff"
data-thumbunselectedimagebordercolor="#00ff00"

Demo: