KDE: Improve scrollbars appearance of kvantum theme

kde/kvantum/Sweet.svg

@@ -14,7 +14,7 @@
    viewBox="0 0 380.00266 635.00043"
    id="svg1764"
    sodipodi:docname="Sweet.svg"
-   inkscape:version="1.0.1 (3bc2e813f5, 2020-09-07)">
+   inkscape:version="1.0.2 (e86c870879, 2021-01-15)">
   <metadata
      id="metadata1768">
     <rdf:RDF>
@@ -37,19 +37,31 @@
      inkscape:pageopacity="0.98823529"
      inkscape:pageshadow="2"
      inkscape:window-width="1366"
-     inkscape:window-height="727"
+     inkscape:window-height="717"
      id="namedview1766"
      showgrid="false"
-     inkscape:zoom="4.6909843"
+     inkscape:zoom="4.5211383"
-     inkscape:cx="137.39571"
+     inkscape:cx="149.05666"
-     inkscape:cy="490.65589"
+     inkscape:cy="246.09918"
      inkscape:window-x="0"
-     inkscape:window-y="20"
+     inkscape:window-y="30"
      inkscape:window-maximized="1"
-     inkscape:current-layer="g369"
+     inkscape:current-layer="svg1764"
      inkscape:document-rotation="0" />
   <defs
      id="defs116">
+    <linearGradient
+       inkscape:collect="always"
+       id="linearGradient2049">
+      <stop
+         style="stop-color:#ff00cc;stop-opacity:0.97719872"
+         offset="0"
+         id="stop2043" />
+      <stop
+         style="stop-color:#333399;stop-opacity:0.784"
+         offset="1"
+         id="stop2045" />
+    </linearGradient>
     <linearGradient
        inkscape:collect="always"
        id="linearGradient2000">
@@ -680,7 +692,7 @@
     </filter>
     <linearGradient
        inkscape:collect="always"
-       xlink:href="#linearGradient2000"
+       xlink:href="#linearGradient2049"
        id="linearGradient2030"
        x1="70"
        y1="425"
@@ -3493,7 +3505,7 @@
        y="165"
        width="8"
        height="12"
-       style="fill:#343b59;fill-opacity:1" />
+       style="fill:#424b71;fill-opacity:1" />
     <rect
        id="scrollbarslider-pressed"
        x="195"