Try adding the following to a child theme or custom css plugin (eg the custom css module of Jetpack)
.main-navigation .nav-menu > li > a {
color: #900;
}
For support specific to your theme, try posting at:
https://wordpress.org/support/theme/pacify
Thanks Cubecolour, I added a custom css plugin and inserted the code that you gave but nothing changes. I am not sure if there is anything that I am missing from this instruction.
You have pasted in:
.main-navigation .nav-menu > ; li > ; a {
color: #900;
}
which is not valid CSS
Try it with each > ; replaced with >