Index: lib/inspectorObserver.js
===================================================================
--- a/lib/inspectorObserver.js
+++ b/lib/inspectorObserver.js
@@ -40,16 +40,13 @@
   inspectorReady: function(eventName, toolbox, panel)
   {
     let panelWindow = panel.panelWin;
-    let inspectBtn = panelWindow.document.getElementById("inspector-inspect-toolbutton");
+    let inspectBtn = panelWindow.document.getElementById("inspector-breadcrumbs");
     if (!inspectBtn)
       return;
 
     let tooltiptext = InspectorObserver.inspectorButtonTooltip;
     button = panelWindow.document.createElement("toolbarbutton");
-    button.setAttribute("id", "inspector-abp-elemhide-toolbutton");
-    button.style.listStyleImage = "url('chrome://adblockplus/skin/abp-status-16.png')";
-    button.style.MozImageRegion = "rect(0px, 16px, 16px, 0px)";
-    button.style.paddingTop = "4px";
+    button.setAttribute("id", "ehh-inspector-toolbarbutton");
     button.setAttribute("class", "devtools-toolbarbutton");
     button.setAttribute("tooltiptext", tooltiptext);
     button.setAttribute("tabindex", "0");
@@ -58,7 +55,12 @@
       panelWindow.openDialog("chrome://elemhidehelper/content/composer.xul", "_blank",
                              "chrome,centerscreen,resizable,dialog=no", panel.selection.node);
     }, false);
-    inspectBtn.parentNode.insertBefore(button, inspectBtn.nextSibling);
+    
+    //Override button style for light DevTools theme
+    let style = panelWindow.document.createProcessingInstruction("xml-stylesheet", 'href="chrome://elemhidehelper/skin/devToolsOverlay.css" type="text/css"');
+    panelWindow.document.insertBefore(style, panelWindow.document.firstChild);
+    
+    inspectBtn.parentNode.insertBefore(button, inspectBtn);
   }
 };