From your browser first do a right click on a element or text which you want to change, then click inspect. You will see a list of different html elements, and one you selected will be highlighted. Then you need to read it's class if it has it, it will be like class='something'. Now, I guess you are on Wordpress and open Appearance//Theme editor...there will be a list of files on the right, you want to find one called style.css or something similar. Then open it, and at the end of the file add .something { color: #000; } where something should be replaced with class name you found on your element, and #000 with color you want. Save file and that's should be it. Please note that this are just general steps, some of the steps may be different, it depends a lot on your theme and other factors.