Trying to change menu color and link highlight color as well as edit footer

I am trying to change the color of the menu, link highlight color and the scroll arrow color to #8224e3. I am also trying to get rid of CATCH WEDDING BY CATCH THEMES in the footer. I have been trying all different fixes and non seem to work I also have been trying to edit the css and php directly by downloading the files off cpanel but I can not seem to find the file on the footer. Thanks in advanced -Zach