A truly exceptional experience to say the least, going in I wasn't sure what to expect from the game but I was met with an emotional story and an unsettling atmosphere that pulled me in and had me enthralled. I loved the use of color to highlight important objects in the environment while still retaining the colorless aesthetic you're striving for.
The game tackles some pretty dark themes but I feel that it's done it in a manner that is respectable. It tells a scary story that some people today are sadly faced with, but few people truly understand.
All in all I enjoyed the game, it was really well done and I can tell a lot of time and love was put into it. I hope you don't mind, but I made a let's play of your game on my channel.
Cheers and have a good day!