Hey Cassidy,
As you see this requires custom CSS as this is not a theme feature by default and is outside of our support scope, but we will do our best to help you getting started with the customization but we will not be able to implement it.
To change the font color by default to white, you can make use of the following code:
.widget ul li a, .widget ol li a {
color: #fff;
}
It seems like you’ve syntax errors in your custom CSS, you can validate your CSS here http://csslint.net/ and remove errors to fix the issue.
Here are some related links for further reading, this could help you in finding and implementing some CSS fixes:
Please note that the code provided above serves as a guide only and is to help you in getting started so implementing it and maintaining the code will be out of our support scope and for further maintenance for new possible versions of the theme that may cause the customization to break, you will need to hire a developer.
Hope this helps!