Hi there, @Jeff_Riggs 
Many thanks for sharing your feedback with us!
Currently, you can change the arrow color using this code in the Custom CSS field on the Settings tab of your widget’s settings:
.eapp-slider-arrow-icon {
fill: red;
}
However, I agree that it would be awesome to have this option in the settings and I’ve added this idea to the Wishlist on your behalf - Setting to control color of the arrow icon