Hello TheFolk11,
Most likely the text color was set in the “Editor” when the text was added. I recommend highlighting the pencil over to the right to determine which one allows you to edit the area you want to lighten. Then, click the pencil and a pop-up menu will ask if you want to “Edit the page.” Click the Go there now button. You will then be in the page Editor. If you are seeing the page code, switch to the “Visual” tab.
If you are not seeing the section, it may have been added as a widget. You should be able to edit that by clicking Customize, then Widgets. Roll your mouse over the area links (such as Below Site Title, Above Site Title, and Footer Center ) to see if one includes your text area. Click the one that corresponds to your text and you should then see the widget listed. Click it to bring it up in an editor.
Thank you,
John-Paul