How to change the Search text color

The Menu Module (as of Divi v4.0+) does not yet allow for customizations of the Search input text color and does not inherit the value set in the Menu Settings → Design → Menu Text → Text Color.

To customize the search input text color we therefore need to use a CSS snippet. In the example below I've set the color to white:

/* change the search input text color */
.et_pb_menu__search input::placeholder,
.et_pb_fullwidth_menu .et_pb_menu__search-input, 
.et_pb_menu .et_pb_menu__search-input {
    color: #fff; /* white */

You can change the value #fff to your preferred color code.

You can cut and paste this snippet into your Divi Theme Options → Custom CSS. Here is example image: