You can change the color of the highlighter within the Search & Highlight function:
In order to do so, run the Search & Highlight Tool
Choose the word you wish to highlight and click the tool for highlighting:
If the color is not the color you want, you can bring up the format panel by clicking the arrow panel on the right to hide the panel and click again to bring back up with the format tab:
Click the "Format" tab and click one of the searched words that you highlighted to bring up the highlight options:
You can select one of the colors and it will change the highlighted word to that highlight color
