Atom’s iconic One Dark theme carefully ported to Delphi and Lazarus. All text editing features are supported in both IDEs, including some obscure Delphi styles that are typically omitted in user-created themes.
On Windows and Delphi you can use the included atom-one-dark.theme.xml file with DITE, which is quick and easy but requires installing additional program. Copy the theme .xml file to %ProgramData%\DITE\Themes, launch DITE and apply the theme.
Or, if you don’t want to bother installing DITE, use the manual installation methods described below. In case of Lazarus this is actually preferred, because DITE exports the “modified line” Lazarus text editor style incorrectly.
Import the registry settings atom_one_dark_delphi.reg file corresponding to your Delphi version. If your Delphi version isn’t present, use regedit to find out your version number under the HKEY_CURRENT_USER\Software\Embarcadero\BDS key and modify the .reg file accordingly. All Delphi versions since at least Delphi 10 Seattle should have similarly organized editor highlighting registry settings. Older Delphi versions (such as old XE and BDS) might be more involving.
Copy the provided Coloratom_one_dark.xml file to %LocalAppData%\lazarus\userschemes. Adjust the path for your platform.