bkgd_bottom_color.push_back(gradient_bottom.red);
bkgd_bottom_color.push_back(gradient_bottom.green);
bkgd_bottom_color.push_back(gradient_bottom.blue);
bkgd_bottom_color.push_back(gradient_bottom.red);
bkgd_bottom_color.push_back(gradient_bottom.green);
bkgd_bottom_color.push_back(gradient_bottom.blue);