Originally Posted by MK99

Need also:
/usr/share/themes/base/meegotouch/sysuid/style/statusindicatormenu.css

Code:

MPannableWidgetStyle#StatusIndicatorMenuViewport {
    
    background-color: transparent;
}

Or add extra-line to blanco sysuid.css.
Or add it instead:

Code:

background-opacity: 0.5;