How to keep my (custom) IDE color scheme after switching themes?

Question

Delphi Rio comes with two color schemes: dark and light.
I open Tools->Options->Editor->Color and changed the dark color scheme to make it even darker.

But after switching to the 'light' theme and then back to the 'dark' theme my colors were lost:

I don't get how this color editor works. How do I permanently store my colors?

Answer 1

Know Delphi bug (no wonder why Delphi will fall out of Tiobe index) as reported by Dalija: quality.embarcadero.com/browse/RSP-19524.

Workaround:
Setup editor colors for "dark" theme and save the key.
Setup editor colors for "light" them and save the registry.
When you want to switch between themes, shutdown Delphi and load the registry key.

Update:
There is a similar bug while trying to customize the Object Inspector. Color settings are lots without even changing the theme!

Dark theme example:
Here are color for pure-dark (green font, black bkg) theme:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight]

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Additional search match highlight] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$006202E3" "Background Color New"="$0033001B"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Assembler] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00FF53BE" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Attribute Names] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clWhite" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Attribute Values] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clRed" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Brace Highlight] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00804917" "Background Color New"="$00791116"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Character] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clYellow" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Code folding tree] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00597D73" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Comment] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clSilver" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Diff addition] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clNavy" "Background Color New"="clYellow"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Diff deletion] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clNavy" "Background Color New"="clRed"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Diff move] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clNavy" "Background Color New"="clBlue"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Disabled break] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$001B1514"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Enabled break] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$00000F0F"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Error line] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$0036234B"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Execution point] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$0033001A"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Float] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00AEFFFF" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Folded code] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$0000FF80" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Hex] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clFuchsia" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Hot Link] "Bold"="False" "Italic"="False" "Underline"="True" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clAqua" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Identifier] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clLime" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Illegal Char] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clRed" "Background Color New"="clWhite"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Invalid break] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$002B2B33"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Line Highlight] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="$00350000"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Line Number] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00757464" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Marked block] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00F9FFD2" "Background Color New"="$00CA5735"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Modified line] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$0000FF80" "Background Color New"="clYellow"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Number] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clYellow" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Octal] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clFuchsia" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Plain text] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$00C9FF80" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Preprocessor] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$003C92DF" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Reserved word] "Bold"="True" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="$008CFF4F" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Right margin] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clSilver" "Background Color New"="clWhite"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Scripts] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clRed" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Search match] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clBlue" "Background Color New"="clYellow"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\String] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clRed" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Structural Highlighting] "Enabled"="True" "Color1"="$00FF86FF" "Color2"="$00FE85CD" "Color3"="$00F1A7B0" "Color4"="$00E1CA7B" "FlowControlEnabled"="True" "FlowControlLocation"="1" "ShowSingleLine"="True"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Symbol] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clLime" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Sync edit background] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="True" "Default Background"="False" "Foreground Color New"="clBlack" "Background Color New"="clGray"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Sync edit highlight] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clBlue" "Background Color New"="clWhite"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Tags] "Bold"="True" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clAqua" "Background Color New"="clBlack"

[HKEY_CURRENT_USER\Software\Embarcadero\BDS\20.0\Editor\Highlight\Whitespace] "Bold"="False" "Italic"="False" "Underline"="False" "Default Foreground"="False" "Default Background"="False" "Foreground Color New"="clLime" "Background Color New"="clBlack"

March Headline: Delphi is about to fall out of the TIOBE index top 20