Problem and workaround: All of my styles went away when "NANNANNAN" showed up in a style -- the GUI for color picking has a bug

[wealthychef1]

Overview

I am posting a problem I found along with the user workaround here. I believe it is a small bug in the UI.
I put this here in the issues as a heads up to the @mgmeyers to maybe do some error checking to prevent this weird edge case, and as a word to the wise for any users googling for this problem.
Unfortunately, I don't remember exactly when the value appeared, but I do know it was when I was messing with the color picker in choosing a color for part of the interface. The value was put in the field and I saved it not knowing it was invalid.

My environment

This is with Obsidian Version 1.5.10 (Installer 1.4.13) on Mac OS Sonoma.

What I tried

I tried disabling all plugins and re-enabling them, but that did not fix it.
Furthermore, when I exported my settings and tried re-importing them, I got an error about invalid values.

The symptoms

This morning, for some reason, all my style settings went away. The plugin completely ceased to work. I was getting errors like this:

The solution

Here is the contents of the styles I found in .obsidian/plugins/obsidian-style-settings/data.json. Note the "#NANNANNAN" string for bg3.
When I removed that line from the file, the problem went away immediately.

{
  "minimal-style@@base@@dark": "#0E035C",
  "minimal-style@@bg2@@light": "#FAFAFF",
  "minimal-style@@bg3@@dark": "#NANNANNAN",
  "minimal-style@@bg3@@light": "#F5F5F5",
  "minimal-style@@ui1@@light": "#D2D2FF",
  "minimal-style@@ax1@@dark": "#8DE4FD",
  "minimal-style@@ax1@@light": "#013EFF",
  "minimal-style@@ax2@@dark": "#CBACF0",
  "minimal-style@@ax2@@light": "#5114E6",
  "minimal-style@@ax3@@dark": "#6264E3",
  "minimal-style@@ax3@@light": "#89A0F0",
  "minimal-style@@sp1@@dark": "#C1E8FF",
  "minimal-style@@sp1@@light": "#06005E",
  "minimal-style@@blockquote-color@@dark": "#84D5FC",
  "minimal-style@@blockquote-color@@light": "#050E68",
  "minimal-style@@blockquote-background-color@@dark": "#382BA9",
  "minimal-style@@blockquote-background-color@@light": "#DBECF9",
  "minimal-style@@blockquote-font-style": "normal",
  "minimal-style@@callouts-style": "callouts-default",
  "minimal-style@@callout-blend-mode": "normal",
  "minimal-style@@code-size": "16px",
  "minimal-style@@code-background@@dark": "#100344",
  "minimal-style@@code-background@@light": "#DCE1E7",
  "minimal-style@@code-normal@@dark": "#04A187",
  "minimal-style@@code-normal@@light": "#4E7FEC",
  "minimal-style@@code-function@@dark": "#BFD5FC",
  "minimal-style@@code-function@@light": "#0045AC",
  "minimal-style@@code-keyword@@dark": "#A1E2FB",
  "minimal-style@@code-keyword@@light": "#0874C7",
  "minimal-style@@code-important@@dark": "#FFD7D7",
  "minimal-style@@code-important@@light": "#FF5959",
  "minimal-style@@code-operator@@dark": "#FCE8C5",
  "minimal-style@@code-operator@@light": "#777305",
  "minimal-style@@code-property@@dark": "#FDC1F8",
  "minimal-style@@code-property@@light": "#710180",
  "minimal-style@@code-punctuation@@dark": "#88CAFD",
  "minimal-style@@code-punctuation@@light": "#020857",
  "minimal-style@@code-string@@dark": "#B0FFA9",
  "minimal-style@@code-string@@light": "#31801C",
  "minimal-style@@code-tag@@dark": "#BD6900",
  "minimal-style@@code-tag@@light": "#DF9133",
  "minimal-style@@code-value@@dark": "#D4B9F3",
  "minimal-style@@code-value@@light": "#6807C6",
  "minimal-style@@embed-strict": true,
  "minimal-style@@h1-size": "1.1em",
  "minimal-style@@h1-weight": 600,
  "minimal-style@@h1-color@@dark": "#A2F37D",
  "minimal-style@@h1-color@@light": "#0F7E02",
  "minimal-style@@h1-variant": "small-caps",
  "minimal-style@@h2-color@@dark": "#83B4EE",
  "minimal-style@@h2-color@@light": "#0638AF",
  "minimal-style@@h2-variant": "small-caps",
  "minimal-style@@h3-color@@dark": "#FC6DD4",
  "minimal-style@@h3-color@@light": "#740053",
  "minimal-style@@h3-variant": "small-caps",
  "minimal-style@@h4-weight": 600,
  "minimal-style@@h4-color@@dark": "#A0A1F4",
  "minimal-style@@h4-color@@light": "#0B1790",
  "minimal-style@@h5-weight": 600,
  "minimal-style@@h5-color@@dark": "#D3C9F3",
  "minimal-style@@h5-color@@light": "#6A40F4",
  "minimal-style@@h6-weight": 600,
  "minimal-style@@h6-color@@dark": "#DC97F5",
  "minimal-style@@h6-color@@light": "#610B90",
  "minimal-style@@link-unresolved-opacity": 1,
  "minimal-style@@link-unresolved-color@@dark": "#F7D6E0",
  "minimal-style@@link-unresolved-color@@light": "#6F8FA2",
  "minimal-style@@active-line-on": true,
  "minimal-style@@active-line-bg@@light": "#E4E4E4",
  "minimal-style@@sidebar-tabs-style": "sidebar-tabs-wide",
  "minimal-style@@tag-radius": "14px",
  "minimal-style@@hl1@@dark": "#0080BD",
  "minimal-style@@hl1@@light": "#CBFDFF",
  "minimal-style@@hl2@@dark": "#56551F",
  "minimal-style@@hl2@@light": "#FFFED0",
  "minimal-style@@tx3@@dark": "#C6C4C4",
  "minimal-style@@tx3@@light": "#595656",
  "minimal-style@@bold-color@@dark": "#FE0000",
  "minimal-style@@bold-color@@light": "#CC0000",
  "minimal-style@@title-color@@light": "#8458FB",
  "minimal-style@@inline-title-weight": 600
}