Problem with Toast

[profeciak]

Before update to PrimeNg 9 I was using p-growl to show all the messages on the screen. Now I've changed it to <p-toast> and I'm creating them like :
this.messageService.add({severity: 'warn', summary: 'Warning', detail: warnMessage, life: 4000});
But I don't know why every message has white background. Earlier usin practicaly the same format in p-growl it was red. Am I missing something?