use color swatches for selected bg and fg in svg assets

common/gnome-shell/3.18/common-assets/menu/menu-hover.svg

@@ -2,11 +2,13 @@
 <!-- Created with Inkscape (http://www.inkscape.org/) -->
 
 <svg
+   xmlns:osb="http://www.openswatchbook.org/uri/2009/osb"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:cc="http://creativecommons.org/ns#"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:svg="http://www.w3.org/2000/svg"
    xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    width="9.0311108mm"
@@ -17,7 +19,25 @@
    inkscape:version="0.91 r13725"
    sodipodi:docname="menu-hover.svg">
   <defs
-     id="defs6929" />
+     id="defs6929">
+    <linearGradient
+       id="selected_bg_color"
+       osb:paint="solid">
+      <stop
+         style="stop-color:#5294e2;stop-opacity:1;"
+         offset="0"
+         id="stop4138" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#selected_bg_color"
+       id="linearGradient4140"
+       x1="1185"
+       y1="108"
+       x2="1185"
+       y2="141"
+       gradientUnits="userSpaceOnUse" />
+  </defs>
   <sodipodi:namedview
      id="base"
      pagecolor="#ffffff"
@@ -26,8 +46,8 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="11.2"
-     inkscape:cx="16.532799"
-     inkscape:cy="17.338845"
+     inkscape:cx="0.595299"
+     inkscape:cy="17.160274"
      inkscape:document-units="px"
      inkscape:current-layer="layer1"
      showgrid="true"
@@ -71,14 +91,14 @@
     <g
        transform="matrix(0.0689655,0,0,1.0000001,71.275885,274.36218)"
        id="g6908"
-       style="fill:#5294e2;fill-opacity:1">
+       style="fill:url(#linearGradient4140);fill-opacity:1">
       <rect
          y="108"
          x="1011"
          height="33"
          width="348"
          id="rect5271"
-         style="opacity:1;fill:#5294e2;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:0" />
+         style="opacity:1;fill:url(#linearGradient4140);fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:0" />
     </g>
   </g>
 </svg>