Sidebar active styling not visible enough

[eddiemonge]

the slightly darker color on active item in the sidebar can easily be missed.

[johnowenatala]

This is still an usability issue: the sidebar should highlight which section am I.

It already has a CSS class for current section and current parent section, but it doesn't have any styles:

• current-cat-parent
• current-cat

I'm not a designer, but some ideas:

/* some background color for parent selected category, using all width */
#sidebar li.current-cat-parent {
  background-color: #fefee0;
  margin-left: -20px;
  padding-left: 40px;
  margin-right: -20px;
  background-position-x: 20px;
}
/* and for current category a red bullet and red text */
#sidebar li.current-cat {
  background: url('https://cdn1.iconfinder.com/data/icons/gloss-basic-icons-by-momentum/16/bullet-red.png') no-repeat -4px 8px;
}
#sidebar li.current-cat a {
  color: red;
}