getTransitionColor example

foreach ($transition->getFroms() as $from) {
                $fromEscaped = $this->escape($from);
                foreach ($transition->getTos() as $to) {
                    $toEscaped = $this->escape($to);

                    $transitionEscapedWithStyle = $this->getTransitionEscapedWithStyle($workflowMetadata, $transition, $transitionEscaped);

                    $arrowColor = $workflowMetadata->getMetadata('arrow_color', $transition);

                    $transitionColor = '';
                    if (null !== $arrowColor) {
                        $transitionColor = $this->getTransitionColor($arrowColor) ?? '';
                    }

                    if ($this->isWorkflowTransitionType()) {
                        $transitionLabel = '';
                        // Add label only if it has a style                         if ($transitionEscapedWithStyle != $transitionEscaped) {
                            $transitionLabel = ": $transitionEscapedWithStyle";
                        }

                        $lines = [
                            "{$fromEscaped} -{$transitionColor}-> {$transitionEscaped}{$transitionLabel}",
                            "