The whole dungeon between first boss and second boss is pink.
It returns to normal looks once 2nd boss is defeated and mists are dispersed!
*tried a variety of graphics settings and no-addons mode
macOS Big Sur
MacBook Pro (13-inch, 2020)
2 GHz Quad-Core Intel Core i5
16 GB 3733 MHz LPDDR4X
Intel Iris Plus Graphics 1536 MB