Button colour not changing on page menu sidebar
 

Hello - I have changed the menu sidebar so that the icon is a cirlce but it does not change colour on the submenus as it did in its default state.
I added the following code:-
/* SIDEBAR NAVIGATION ICON*/

.widget ul li a:link,
.widget ul li a:visited,
.widget ul li a:active,
.widget ul li a:hover {
border-left: 0 !important;
padding-left: 0 !important;
}
.widget ul {
/* for other styles, try "disc" and "square" instead of "circle" */
list-style-type: DISC !important;
padding-left: 0;
margin-left: 0;
}
.widget ul li {
/* 1.35 or more required for Safari or bullets too wide on the left */
margin-left: 1.35em;

/* overwrite existing display:block Firefox */
display: list-item;
}
/* SIDEBAR NAVIGATION ICON END */

If I remove the code the icons go back to being the colour of the navigation text. Any help gratefully received