A quick look through the code shows the bar colour as #edeceb and that looks grey on my screen based on https://www.color-hex.com/color/edeceb
(then again I do have a colour profiled monitor for photo work). I could also be talking out of my botty as this is the first time I've seen that code
Maybe a change and recompile with this set to https://www.color-hex.com/color/e1dfde
may help - but would this not get replaced with the next update unless the override is in place?
Need Pi spray - these things are breeding in my house...