address review

Signed-off-by: szaimen <szaimen@e.mail.de>

Author: szaimen

apps/theming/lib/Themes/DefaultTheme.php

@@ -203,6 +203,8 @@ public function getCSSVariables(): array {
 			'--background-invert-if-bright' => 'invert(100%)',
 
 			'--image-main-background' => "url('" . $this->urlGenerator->imagePath('core', 'app-background.jpg') . "')",
+
+			'--logo-invert-if-default' => ($hasCustomLogoHeader && $this->util->invertTextColor($this->primaryColor)) ? 'no' : 'invert(100%)',
 		];
 
 		// Primary variables

core/css/header.scss

@@ -172,7 +172,7 @@
 		left: 12px;
 		top: 1px;
 		bottom: 1px;
-		filter: var(--primary-invert-if-bright);
+		filter: var(--logo-invert-if-default);
 	}
 
 	.header-appname-container {