Thank you for choosing to work with Phlox and welcome to the forums.
For the first question, please navigate to the Appearance -> Customize -> Additional CSS and use the following CSS snippet :
color : red !important;
For the second question, one way is to create a menu of your links and use the Navigation Menu widget in the footer area.
Also you can use the Text widget for links as well as for your newsletter signup form.
Please let me know if this was helpful to you.
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