Dark Theme graphs, sometimes white around line, sometimes dark, weird

Validate tests ok on all counts, I’m on the latest version:

Version 1.69-52-gc149ce0b3 - Sun Nov 22 2020 23:35:49 GMT-0700
Database Schema 2020_11_02_164331_add_powerstate_enum_to_vminfo (190)
Web Server Apache/2.4.41 (Ubuntu)
PHP 7.4.3
Python 3.8.5
MySQL 8.0.22-0ubuntu0.20.04.2
Laravel 8.11.2
RRDtool 1.7.2

The issue I’m experiencing is related to the dark theme, and I’ve experienced it for a while now. Can’t remember when, but over a year ago I enabled the Dark Theme for libreNMS. Now, most of the graph backgrounds are black, but many of them have white vertical bands around the red graph lines. But there are other graphs (or other points in time for the same graph) that don’t have these white bands.

I have a feeling I need to trigger the RRDs to regenerate, but I’m not sure if that’s the best idea or not. And I have metrics going back to the full 2yrs.

So anyone have any advice on this? I really would like the graphs to not have these white bands any more.

The dark themes are incomplete.

Clearly that’s the case, and I’m hoping this can help get it fixed.