diff --git a/libs/widgets/qcodeedit.cpp b/libs/widgets/qcodeedit.cpp
index 4a5a5ed..a99d45a 100644
--- a/libs/widgets/qcodeedit.cpp
+++ b/libs/widgets/qcodeedit.cpp
@@ -584,6 +584,7 @@ void QCodeEdit::changeEvent(QEvent * e) {
 		ui->retranslateUi(this);
 		lbl_help[lhF1]->setText(tr("Press F1 for details"));
 		break;
+	case QEvent::PaletteChange: is_dark_theme = palette().color(QPalette::Window).valueF() < 0.5; break;
 	default: break;
 	}
 }
@@ -876,8 +877,21 @@ void QCodeEdit::highlightBrackets() {
 
 
 void QCodeEdit::applyExtraSelection() {
-	ui->textCode->setExtraSelections(QList<QTextEdit::ExtraSelection>() << es_line << es_selected << es_custom << es_brackets
-	                                                                    << es_search_list << es_cursor << es_link << es_blockselection);
+	auto inverseColorValue = [](const QColor & c) {
+		qreal hsv[4];
+		c.getHsvF(&hsv[0], &hsv[1], &hsv[2], &hsv[3]);
+		return QColor::fromHsvF(hsv[0], hsv[1], 1. - hsv[2], hsv[3]);
+	};
+	QList<QTextEdit::ExtraSelection> esl;
+	esl << es_line << es_selected << es_custom << es_brackets << es_search_list << es_cursor << es_link;
+	if (is_dark_theme) {
+		for (auto & e: esl) {
+			e.format.foreground().setColor(inverseColorValue(e.format.foreground().color()));
+			e.format.background().setColor(inverseColorValue(e.format.background().color()));
+		}
+	}
+	esl << es_blockselection;
+	ui->textCode->setExtraSelections(esl);
 }
 
 
diff --git a/libs/widgets/qcodeedit.h b/libs/widgets/qcodeedit.h
index c5bdae9..64ad940 100644
--- a/libs/widgets/qcodeedit.h
+++ b/libs/widgets/qcodeedit.h
@@ -245,6 +245,7 @@ private:
 	QTextCursor block_start_cursor, drag_cursor;
 	int prev_lc, auto_comp_pl, timer_parse, timer_blink, cur_search_ind, pos_press, pos_el_press;
 	int cursor_width;
+	bool is_dark_theme = false;
 	bool spaces_, _ignore_focus_out, _first, _destructor, _replacing;
 	bool word_complete, help_visible, cursor_state, block_sel_state;
 };