Customizing sidebar background color – Update from 3.3.7 -> 3.3.9

Hi,

after updating the theme hueman version from 3.3.7 to 3.3.9 my customizing of the sidebar color no longer works.

My custom style.css:

.s1, .s2 {
/*background: #0786e7 !important; */
background: rgba(7, 134, 231, 1.0) !important;
}

/* remove primary sidebar background image */
.main .main-inner {
    background: none !important; 
}

And also I use a custom s-right-s1.png in the folder img/sidebar inside my child theme folder.

Thanks for your help!