UserAgent: Mozilla/5.0 (X11; CrOS armv7l 8743.69.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.68 Safari/537.36
Platform: 8743.69.0 (Official Build) beta-channel veyron_minnie

Steps to reproduce the problem:
1. Turn on your chromeboook
2. 
3. 

What is the expected behavior?
Option for a dark or blue-light-filtered theme for the entire OS

What went wrong?
No such theme or setting exists

Did this work before? No 

Chrome version: 54.0.2840.68  Channel: beta
OS Version: 8743.69.0
Flash Version: Shockwave Flash 23.0 r0

Thank you :)