Change Color of the theme

Hi there,

I would like to change the color of the theme. I only could change the header (dark or ligth) and the background. But to have it like my page: http://www.art-niveau-hair.de I needed to do some CSS like this:

.footer_pb, .footer_link {margin-left:10px;}
.site-content {
background: #0f0f0f;
box-shadow: 1px 1px 0 #0f0f0f;
}

.design-full-screen .site {
background: #0f0f0f;
box-shadow: 1px 1px 0 #0f0f0f;
}

.page .page .entry-title {
color: #f7f7f7;
}

.page.layout-full-width .hentry
.hentry {
border-bottom: 0px solid #f3f3f3;
}

.navbar-large .site-logo{
max-height: 90px;
}

.navbar-large {
min-height: 130px;
}

Is there a way to adjust it directly in the theme instead of css?

BR Marco