Color changes

I have been able to change the default green color of almost everything by using Theme Options except for a very few: the page navigation at the bottom of my page, the “submit” button on the email sign up widget I am using in the sidebar, the hover color on the Post titles, and the lines separating my posts in the recent posts widget. Can anyone help me (who is super new to this) know how to fix these colors?

For reference:
https://052.634.myftpupload.com