Don't use a bright blue color for menus

As advised, use a light gray instead, this electric blue was a bit too
much.

Signed-off-by: Kevin Ottens <kevin.ottens@nextcloud.com>

src/gui/tray/UserLine.qml

@@ -133,7 +133,7 @@ MenuItem {
                     width: 120
 
                     background: Rectangle {
-                        border.color: Style.ncBlue
+                        border.color: Style.menuBorder
                         radius: 2
                     }
 

src/gui/tray/Window.qml

@@ -83,7 +83,7 @@ Window {
         anchors.fill:   parent
         radius:         Style.trayWindowRadius
         border.width:   Style.trayWindowBorderWidth
-        border.color:   Style.ncBlue
+        border.color:   Style.menuBorder
 
         Rectangle {
             id: trayWindowHeaderBackground
@@ -152,7 +152,7 @@ Window {
                             closePolicy: "CloseOnPressOutside"
 
                             background: Rectangle {
-                                border.color: Style.ncBlue
+                                border.color: Style.menuBorder
                                 radius: Style.currentAccountButtonRadius
                             }
 
@@ -400,7 +400,7 @@ Window {
                         closePolicy: "CloseOnPressOutside"
 
                         background: Rectangle {
-                            border.color: Style.ncBlue
+                            border.color: Style.menuBorder
                             radius: 2
                         }
 

theme/Style/Style.qml

@@ -8,6 +8,7 @@ QtObject {
     property color ncBlue:      "#0082c9"
     property color ncBlueHover: "#009dd9"
     property color lightHover:  "#f7f7f7"
+    property color menuBorder:  "#ededed"
 
     // Fonts
     // We are using pixel size because this is cross platform comparable, point size isn't