style(icons): unify theme-aware palette

assets/icons/array_path.svg

@@ -16,7 +16,7 @@
   <sodipodi:namedview
      id="namedview4"
      pagecolor="#505050"
-     bordercolor="#eeeeee"
+     bordercolor="#B4B6B9"
      borderopacity="1"
      inkscape:showpageshadow="0"
      inkscape:pageopacity="0"
@@ -45,7 +45,7 @@
      width="5.4545455"
      height="5.4545455"
      rx="0.68181819"
-     stroke="#4cc9f0"
+     stroke="#6DB7ED"
      stroke-width="2.04545"
      fill="none"
      id="rect1"
@@ -56,7 +56,7 @@
      width="5.4545455"
      height="5.4545455"
      rx="0.68181819"
-     stroke="#4cc9f0"
+     stroke="#6DB7ED"
      stroke-width="2.04545"
      fill="none"
      id="rect2"
@@ -67,7 +67,7 @@
      width="5.4545455"
      height="5.4545455"
      rx="0.68181819"
-     stroke="#4cc9f0"
+     stroke="#6DB7ED"
      stroke-width="2.04545"
      fill="none"
      id="rect4"