diff --git a/roles/home-cli/files/Microsoft.PowerShell_profile.ps1 b/roles/home-cli/files/Microsoft.PowerShell_profile.ps1
index 3bb4443..35c9e15 100644
--- a/roles/home-cli/files/Microsoft.PowerShell_profile.ps1
+++ b/roles/home-cli/files/Microsoft.PowerShell_profile.ps1
@@ -113,6 +113,47 @@ Set-PSReadLineKeyHandler -Chord Ctrl+Backspace -Function BackwardKillWord
 Set-PSReadLineKeyHandler -Chord Ctrl+Delete -Function KillWord
 Set-PSReadLineKeyHandler -Chord Shift+Spacebar -Function SelfInsert
 
+# Colours for a light-coloured terminal.
+# https://learn.microsoft.com/en-us/powershell/scripting/learn/shell/using-light-theme?view=powershell-7.2
+$ISETheme = @{
+    Command                  = $PSStyle.Foreground.FromRGB(0x0000FF)
+    Comment                  = $PSStyle.Foreground.FromRGB(0x006400)
+    ContinuationPrompt       = $PSStyle.Foreground.FromRGB(0x0000FF)
+    Default                  = $PSStyle.Foreground.FromRGB(0x0000FF)
+    Emphasis                 = $PSStyle.Foreground.FromRGB(0x287BF0)
+    Error                    = $PSStyle.Foreground.FromRGB(0xE50000)
+    InlinePrediction         = $PSStyle.Foreground.FromRGB(0x93A1A1)
+    Keyword                  = $PSStyle.Foreground.FromRGB(0x00008b)
+    #ListPrediction           = $PSStyle.Foreground.FromRGB(0x06DE00)
+    Member                   = $PSStyle.Foreground.FromRGB(0x000000)
+    Number                   = $PSStyle.Foreground.FromRGB(0x800080)
+    Operator                 = $PSStyle.Foreground.FromRGB(0x757575)
+    Parameter                = $PSStyle.Foreground.FromRGB(0x000080)
+    String                   = $PSStyle.Foreground.FromRGB(0x8b0000)
+    Type                     = $PSStyle.Foreground.FromRGB(0x008080)
+    Variable                 = $PSStyle.Foreground.FromRGB(0xff4500)
+    #ListPredictionSelected   = $PSStyle.Background.FromRGB(0x93A1A1)
+    Selection                = $PSStyle.Background.FromRGB(0x00BFFF)
+}
+Set-PSReadLineOption -Colors $ISETheme
+$PSStyle.Formatting.FormatAccent       = "`e[32m"
+$PSStyle.Formatting.TableHeader        = "`e[32m"
+$PSStyle.Formatting.ErrorAccent        = "`e[36m"
+$PSStyle.Formatting.Error              = "`e[31m"
+$PSStyle.Formatting.Warning            = "`e[33m"
+$PSStyle.Formatting.Verbose            = "`e[33m"
+$PSStyle.Formatting.Debug              = "`e[33m"
+$PSStyle.Progress.Style                = "`e[33m"
+$PSStyle.FileInfo.Directory            = $PSStyle.Background.FromRgb(0x2f6aff) +
+                                         $PSStyle.Foreground.BrightWhite
+$PSStyle.FileInfo.SymbolicLink         = "`e[36m"
+$PSStyle.FileInfo.Executable           = "`e[95m"
+$PSStyle.FileInfo.Extension['.ps1']    = "`e[36m"
+$PSStyle.FileInfo.Extension['.ps1xml'] = "`e[36m"
+$PSStyle.FileInfo.Extension['.psd1']   = "`e[36m"
+$PSStyle.FileInfo.Extension['.psm1']   = "`e[36m"
+Remove-Variable ISETheme
+
 # Keep this at the end.
 if (Test-Path "$PSScriptRoot/local.ps1") {
     . "$PSScriptRoot/local.ps1"