Use light color for text in popup widgets even with Ambiance theme

- popups when clicking on site icon, rss icon, bookmark (star) icon

src/bookmarks/bookmarkswidget.cpp

@@ -34,6 +34,13 @@ BookmarksWidget::BookmarksWidget(int bookmarkId, QWidget* parent)
 
     m_bookmarksModel = mApp->bookmarksModel();
     loadBookmark();
+
+    // Use light color for QLabels even with Ubuntu Ambiance theme
+    QPalette pal = palette();
+    pal.setColor(QPalette::WindowText, QToolTip::palette().color(QPalette::ToolTipText));
+    ui->label_2->setPalette(pal);
+    ui->label_3->setPalette(pal);
+    ui->label_4->setPalette(pal);
 }
 
 void BookmarksWidget::loadBookmark()

src/bookmarks/bookmarkswidget.h

@@ -28,6 +28,7 @@
 #include <QDebug>
 #include <QSqlQuery>
 #include <QSqlError>
+#include <QToolTip>
 
 namespace Ui
 {

src/rss/rsswidget.cpp

@@ -32,6 +32,11 @@ RSSWidget::RSSWidget(WebView* view, QWidget* parent)
     QWebFrame* frame = m_view->page()->mainFrame();
     QWebElementCollection links = frame->findAllElements("link[type=\"application/rss+xml\"]");
 
+    // Use light color for QLabels even with Ubuntu Ambiance theme
+    QPalette pal = palette();
+    pal.setColor(QPalette::WindowText, QToolTip::palette().color(QPalette::ToolTipText));
+    ui->label_2->setPalette(pal);
+
     for (int i = 0; i < links.count(); i++) {
         QWebElement element = links.at(i);
         QString title = element.attribute("title");
@@ -49,6 +54,7 @@ RSSWidget::RSSWidget(WebView* view, QWidget* parent)
         button->setWhatsThis(href);
         button->setToolTip(title);
         QLabel* label = new QLabel(this);
+        label->setPalette(pal);
         label->setText(title);
         ui->gridLayout->addWidget(label, i, 0);
         ui->gridLayout->addWidget(button, i, 1);

src/rss/rsswidget.h

@@ -23,6 +23,7 @@
 #include <QPushButton>
 #include <QDebug>
 #include <QWebFrame>
+#include <QToolTip>
 
 namespace Ui
 {

src/webview/siteinfowidget.cpp

@@ -71,6 +71,11 @@ SiteInfoWidget::SiteInfoWidget(QupZilla* mainClass, QWidget* parent)
         }
     }
     connect(ui->pushButton, SIGNAL(clicked()), p_QupZilla, SLOT(showPageInfo()));
+
+    QPalette pal = palette();
+    pal.setColor(QPalette::WindowText, QToolTip::palette().color(QPalette::ToolTipText));
+    ui->historyLabel->setPalette(pal);
+    ui->secureLabel->setPalette(pal);
 }
 
 void SiteInfoWidget::showAt(QWidget* _parent)

src/webview/siteinfowidget.h

@@ -20,6 +20,7 @@
 
 #include <QWidget>
 #include <QMenu>
+#include <QToolTip>
 
 namespace Ui
 {