Hello, I had been using the default "A theme with the operating system colour scheme" v1.1. November 2020. I had a blue title bar (version 88.01, windows 10) , but with the latest update (version 89.0, windows 10) the default is now light grey. I find grey title bars impossible as I can't differentiate between a window on top of a document or just the document at a glance. My default o/s colour scheme is a blue title bar, so I suspect your default follow the o/s is not working correctly. Please fix this because it makes it very hard for me to work. I have tried other colour schemes to try and get something similar but they are all not quite right. [edit I think the problem is the title bar has just disappeared in this update.] I look forward to hearing from you. Regards, Andy