If you have ever played with the colors of your PowerShell window this will help you reset the colors to default
> $psISE.Options SelectedScriptPaneState : Top ShowDefaultSnippets : True ShowToolBar : True ShowOutlining : True ShowLineNumbers : True TokenColors : {[Attribute, #FF00BFFF], [Command, #FF0000FF], [CommandArgument, #FF8A2BE2], [CommandParameter, #FF000080]...} ConsoleTokenColors : {[Attribute, #FFB0C4DE], [Command, #FFE0FFFF], [CommandArgument, #FFEE82EE], [CommandParameter, #FFFFE4B5]...} XmlTokenColors : {[Comment, #FF006400], [CommentDelimiter, #FF008000], [ElementName, #FF8B0000], [MarkupExtension, #FFFF8C00]...} DefaultOptions : Microsoft.PowerShell.Host.ISE.ISEOptions FontSize : 9 Zoom : 100 FontName : Lucida Console ErrorForegroundColor : #FFFF0000 ErrorBackgroundColor : #00FFFFFF WarningForegroundColor : #FFFF8C00 WarningBackgroundColor : #00FFFFFF VerboseForegroundColor : #FF00FFFF VerboseBackgroundColor : #00FFFFFF DebugForegroundColor : #FF00FFFF DebugBackgroundColor : #00FFFFFF ConsolePaneBackgroundColor : #FF012456 ConsolePaneTextBackgroundColor : #FF012456 ConsolePaneForegroundColor : #FFF5F5F5 ScriptPaneBackgroundColor : #FFFFFFFF ScriptPaneForegroundColor : #FF000000 ShowWarningForDuplicateFiles : True ShowWarningBeforeSavingOnRun : True UseLocalHelp : True AutoSaveMinuteInterval : 2 MruCount : 10 ShowIntellisenseInConsolePane : True ShowIntellisenseInScriptPane : True UseEnterToSelectInConsolePaneIntellisense : True UseEnterToSelectInScriptPaneIntellisense : True IntellisenseTimeoutInSeconds : 3
Depending on what you changed something like below will reset your values
$psISE.Options.ConsolePaneBackgroundColor = '#FF012456' $psISE.Options.ConsolePaneTextBackgroundColor = '#FF012456' $psISE.Options.ConsolePaneForegroundColor = '#FFF5F5F5'