There are certain areas of the game where colour is missing, objects are completely blacked out but some aren’t rendering at all. During a world quest in Bastion some spell particles weren’t rendering, instead, they were appearing as blue and white chequered boxes. I’m currently sitting in the mage class hall from Legion, Hall of the Guardian and over half of the Kirin Tor banners are blacked out, some of the carpets are blacked out too but everything else is normal. I spend a fair amount of time in Hall of the Guardian and these issues weren’t appearing before the maintenance on Friday morning.