Remove gray line at the bottom of tabs

src/gui/Base/HTabBar.qml

@@ -6,4 +6,13 @@ import QtQuick.Controls 2.12
 TabBar {
     spacing: 0
     position: TabBar.Header
+
+    background: Item {
+        Rectangle {
+            width: parent.width
+            anchors.bottom: parent.bottom
+            height: 2
+            color: theme.controls.tab.bottomLine
+        }
+    }
 }

src/themes/Glass.qpl

@@ -123,6 +123,7 @@ controls:
             colors.intensity * 4,
             Math.max(0.6, colors.opacity)
         )
+        color bottomLine: background
 
         color hoveredOverlay: controls.button.hoveredOverlay
         color pressedOverlay: controls.button.pressedOverlay

src/themes/Midnight.qpl

@@ -126,6 +126,7 @@ controls:
             colors.intensity * 4,
             Math.max(0.6, colors.opacity)
         )
+        color bottomLine: background
 
         color hoveredOverlay: controls.button.hoveredOverlay
         color pressedOverlay: controls.button.pressedOverlay