A bit of a Dave Greenfield tribute if I may. I’ve loved The Raven album by The Stranglers for many a year and it is their true ‘Black Album’. Many bands with longevity venture into an album that has this feel. A Black Album, a White Album, you’re a clued up bunch, you get my drift.
This tends to appear when the band are settled and experiment a little and it’s never their first album, more like album 4, 5 or whatever so needn’t be named after a colour necessarily.