Hi Karissa,
To remove it just go to the Appearance > Customize > Additional CSS and paste the custom CSS code below: 
If you need to remove the whole bar use the custom CSS below:
.page-header .page-title-wrap {
    display: none;
}
OR, If you just need to remove the just the background color use below custom CSS code
.page-header .page-title-wrap:before {
    content: normal;
}
.page-header .page-title-wrap {
    color: #333;
    border-top: 1px solid rgba(0,0,0,0.1) ;
}
Thank you for using our theme