feat(colorscheme): Move to Catppuccin Mocha

tools/powershell/Prompt.ps1

@@ -5,3 +5,48 @@
 $ENV:STARSHIP_CONFIG = Join-Path $DOTFILES "tools" "starship" "starship_pwsh.toml"
 
 Invoke-Expression (&starship init powershell)
+
+Import-Module Catppuccin
+
+$Flavor = $Catppuccin['Mocha']
+
+# The following colors are used by PowerShell's formatting
+# Again PS 7.2+ only
+$PSStyle.Formatting.Debug = $Flavor.Sky.Foreground()
+$PSStyle.Formatting.Error = $Flavor.Red.Foreground()
+$PSStyle.Formatting.ErrorAccent = $Flavor.Blue.Foreground()
+$PSStyle.Formatting.FormatAccent = $Flavor.Teal.Foreground()
+$PSStyle.Formatting.TableHeader = $Flavor.Rosewater.Foreground()
+$PSStyle.Formatting.Verbose = $Flavor.Yellow.Foreground()
+$PSStyle.Formatting.Warning = $Flavor.Peach.Foreground()
+
+$Colors = @{
+	# Largely based on the Code Editor style guide
+	# Emphasis, ListPrediction and ListPredictionSelected are inspired by the Catppuccin fzf theme
+	
+	# Powershell colours
+	Emphasis               = $Flavor.Red.Foreground()
+	Selection              = $Flavor.Surface0.Background()
+	
+	# PSReadLine prediction colours
+	InlinePrediction       = $Flavor.Overlay0.Foreground()
+	ListPrediction         = $Flavor.Mauve.Foreground()
+	ListPredictionSelected = $Flavor.Surface0.Background()
+
+	# Syntax highlighting
+	Command                = $Flavor.Blue.Foreground()
+	Comment                = $Flavor.Overlay0.Foreground()
+	Default                = $Flavor.Text.Foreground()
+	Error                  = $Flavor.Red.Foreground()
+	Keyword                = $Flavor.Mauve.Foreground()
+	Member                 = $Flavor.Rosewater.Foreground()
+	Number                 = $Flavor.Peach.Foreground()
+	Operator               = $Flavor.Sky.Foreground()
+	Parameter              = $Flavor.Pink.Foreground()
+	String                 = $Flavor.Green.Foreground()
+	Type                   = $Flavor.Yellow.Foreground()
+	Variable               = $Flavor.Lavender.Foreground()
+}
+
+# Set the colours
+Set-PSReadLineOption -Colors $Colors