# Change large output background color in ReverseColor stylesheet

I like using the ReverseColor stylesheet in Mathematica as I find it easier on the eyes when staring at at notebook for long periods of time.

However, the one bugbear I have is that some of the default choices for colors mean that it is sometimes difficult to read text. Most notably, when the output of a computation is large the grey text on light blue background is just terrible - see attached screenshot.

Does anyone know what to edit in the stylesheet to fix this (and how to access it?) Otherwise, is there a dark/reverse color stylesheet around that is better to use?

• does SetOptions[EvaluationNotebook[], StyleDefinitions -> Notebook[{Cell[StyleData[StyleDefinitions -> "ReverseColor.nb"]], Cell[StyleData["OutputSizeLimit"], Background -> Black]}]] give ehat you need?
– kglr
Dec 19 '18 at 18:13
• Yes! Perfect... now I need to work out how to find this in the Option Inspector to fix this globally. Thanks very much! Dec 19 '18 at 19:04

Closely related: How to customize the package editor interface?

You can create a ReverseColor.nb in \$UserBaseDirectory/SystemFiles/FrontEnd/Stylesheets, customize it and point it to ReverseColor.nb from$InstallationDirectory.

$$path = FileNameJoin[{$$UserBaseDirectory, "SystemFiles", "FrontEnd",
"StyleSheets", "ReverseColor.nb"}]

If[
FileExistsQ @ $$path , SystemOpen @$$path (*if it exists edit it manually*)
, If[
Not @ DirectoryQ @ #
, CreateDirectory[#, CreateIntermediateDirectories -> True]
] & @ DirectoryName @ $$path ; Export[$$path
, Notebook[{
Cell[
StyleData[
StyleDefinitions ->
FrontEndFileName[{$InstallationDirectory, "SystemFiles", "FrontEnd", "StyleSheets"}, "ReverseColor.nb"]]], Cell[StyleData["OutputSizeLimit"], Background -> Black] } ] ] ] ` • Comments are not for extended discussion; this conversation has been moved to chat. – Kuba Dec 26 '18 at 8:33 • Thanks to @Kuba for the solution - to avoid the stupid mistake I was making, copy the code above and paste it in a new notebook, this will automatically create the ReverseColor.nb file in$UserBaseDirector/SystemFiles/FrontEnd/StyleSheets. Then restart Mathematica to get to see the changes. Dec 26 '18 at 20:57