Current documentation does not match advanced settings.txt

[GeorgeBurns]

https://www.sumatrapdfreader.org/docs/Customize-theme-colors

It does not accurately describe how to change the settings to custom colours; there is no updated tutorial on how to do this.

[GitHubRulesOK]

That is the tutorial to cover all users let me show step by step.
Here are Standard Themes before adding one.

• find Themes array and add new shortcut definitions
  OK it could say currently that is near the end of file, if you have not added too many end bits.
  
  
  Once saved check it works
  

[GeorgeBurns]

I have tried this on version V3.5.2 64 Bit on a Windows 11 machine. When I try to add the themes array below SelectionHandlers and re-launch Sumatra, the themes array is thrown to the bottom of the .txt file under "Settings below are not recognized by the current version."

txt after before
SumatraPDF-settings.txt

txt after
SumatraPDF-settings.txt

[GitHubRulesOK]

That is why the page clearly states in bold as first line
Available in version 3.6 or later.

I am using a 3.6 "Pre-Release"