message: [GUI] dashboard staking chart, change theme y axis color.
diff: @@ -326,6 +326,7 @@ void DashboardWidget::changeChartColors(){
  gridLineColorX = QColor(255,255,255);
  linePenColorY = gridLineColorX;
  backgroundColor = linePenColorY;
  + axisY->setGridLineColor(QColor("#1a000000"));
  }else{
  gridY = QColor("#40ffffff");
  axisY->setGridLineColor(gridY);
  