Assuming you don't want the 3D color changing look (the white fading into the dark gray): If you remove the entire background: linear-gradient...
line from the extra
box, you can then use the background color
box to change the color behind "total".
If you do want to keep the 3D color changing look but you want to fade other colors into each other, that process would be a little different depending on what kind of fade you want.