One more thing to add . . .
I had been trying to change the following code:
.iheader.front {
background-color: #008000;
}
But instead, what I should have focused on was the code for the gradient:
.iheader {
background: linear-gradient(to bottom, rgba(0, 128, 0, 1) 0%, rgba(0, 128, 0, 1) 30%, rgba(0, 128, 0, 1) 69%, rgba(0, 128, 0, 1) 100%) repeat scroll 0 0 rgba(0, 0, 0, 0);
display: block;
height: 100px;
text-align: center;
width: 100%;
}
I went in and changed the gradient to reflect the color choice of #008000. This is what actually changed my header bar to the green that I wanted.