diff --git a/src/calibre/gui2/progress_indicator/CalibreStyle.cpp b/src/calibre/gui2/progress_indicator/CalibreStyle.cpp
index fe0bb6cf54..7fb32280b2 100644
--- a/src/calibre/gui2/progress_indicator/CalibreStyle.cpp
+++ b/src/calibre/gui2/progress_indicator/CalibreStyle.cpp
@@ -141,10 +141,15 @@ draw_arrow(Qt::ArrowType type, QPainter *painter, const QStyleOption *option, co
 // scrollbar {{{
 void
 CalibreStyle::draw_scrollbar(const QStyleOptionSlider *scroll_bar, QPainter * painter, const QWidget * widget) const {
+    bool is_dark = is_color_dark(scroll_bar->palette.color(QPalette::Window));
     bool horizontal = scroll_bar->orientation == Qt::Horizontal;
 
-    QColor outline = scroll_bar->palette.window().color().darker(140);
-    QColor alphaOutline = outline;
+    QColor alphaOutline = scroll_bar->palette.window().color();
+    if (is_dark) {
+        alphaOutline = alphaOutline.darker(140);
+    } else {
+        alphaOutline = alphaOutline.lighter(180);
+    }
     alphaOutline.setAlpha(180);
 
     QRect scrollBarSubLine = subControlRect(CC_ScrollBar, scroll_bar, SC_ScrollBarSubLine, widget);
@@ -158,10 +163,17 @@ CalibreStyle::draw_scrollbar(const QStyleOptionSlider *scroll_bar, QPainter * pa
     QLinearGradient gradient(rect.center().x(), rect.top(), rect.center().x(), rect.bottom());
     if (!horizontal) gradient = QLinearGradient(rect.left(), rect.center().y(), rect.right(), rect.center().y());
     QColor buttonColor = scroll_bar->palette.color(QPalette::Button);
-    gradient.setColorAt(0, buttonColor.darker(107));
-    gradient.setColorAt(0.1, buttonColor.darker(105));
-    gradient.setColorAt(0.9, buttonColor.darker(105));
-    gradient.setColorAt(1, buttonColor.darker(107));
+    if (is_dark) {
+        gradient.setColorAt(0, buttonColor.darker(107));
+        gradient.setColorAt(0.1, buttonColor.darker(105));
+        gradient.setColorAt(0.9, buttonColor.darker(105));
+        gradient.setColorAt(1, buttonColor.darker(107));
+    } else {
+        gradient.setColorAt(0, buttonColor.darker(105));
+        gradient.setColorAt(0.1, buttonColor.darker(103));
+        gradient.setColorAt(0.9, buttonColor.darker(103));
+        gradient.setColorAt(1, buttonColor.darker(105));
+    }
     painter->save();
     painter->setPen(Qt::NoPen);
     painter->fillRect(rect, gradient);
@@ -177,11 +189,12 @@ CalibreStyle::draw_scrollbar(const QStyleOptionSlider *scroll_bar, QPainter * pa
     // Paint slider
     gradient = QLinearGradient(scrollBarSlider.center().x(), scrollBarSlider.top(), scrollBarSlider.center().x(), scrollBarSlider.bottom());
     if (!horizontal) gradient = QLinearGradient(scrollBarSlider.left(), scrollBarSlider.center().y(), scrollBarSlider.right(), scrollBarSlider.center().y());
-    QColor m = scroll_bar->palette.window().color().lighter(130);
+    QColor m = scroll_bar->palette.window().color();
+    m = is_dark ? m.lighter(130) : m.darker(115);
     if (scroll_bar->state & State_MouseOver) {
-        gradient.setColorAt(0, m.lighter()); gradient.setColorAt(1, m.lighter(175));
+        gradient.setColorAt(0, is_dark ? m.lighter() : m.darker(115)); gradient.setColorAt(1, is_dark ? m.lighter(175) : m.darker(145));
     } else {
-        gradient.setColorAt(0, m); gradient.setColorAt(1, m.lighter());
+        gradient.setColorAt(0, m); gradient.setColorAt(1, is_dark ? m.lighter() : m.darker(135));
     }
     painter->save();
     painter->setRenderHint(QPainter::Antialiasing, true);
@@ -277,7 +290,7 @@ void CalibreStyle::drawComplexControl(ComplexControl control, const QStyleOption
 
         case CC_ScrollBar: {
             const QStyleOptionSlider *scroll_bar = qstyleoption_cast<const QStyleOptionSlider *>(option);
-            if (!transient_scroller && scroll_bar && is_color_dark(option->palette.color(QPalette::Window))) {
+            if (!transient_scroller && scroll_bar) {
                 this->draw_scrollbar(scroll_bar, painter, widget);
                 return;
             }} break;