Change desktop background color

Russ

You can use this with the TRIGGERcmd Smart Home skill's ability to pass a color as the parameter (not just on or off).

param (
    [string]$ColorName = "red"
)

# Define a hashtable mapping color names to hexadecimal color codes
$ColorHexMap = @{
    "red" = "0x2a2490"
    "blue" = "0xFF0000"
    "green" = "0x008000"
    "purple" = "0xA52A2A"
    "yellow" = "0x70ffe6"
    "brown" = "0x2d4159"
    "black" = "0x000000"
    "white" = "0xFFFFFF"
}

# Check if the provided color name exists in the hashtable
if ($ColorHexMap.ContainsKey($ColorName)) {
    $ColorHex = $ColorHexMap[$ColorName]
} else {
    Write-Host "Invalid color name. Please use 'red,' 'blue,' 'green' etc."
    exit
}

Add-Type -TypeDefinition @"
    using System;
    using System.Runtime.InteropServices;
    
    public class PInvoke {
        [DllImport("user32.dll")]
        public static extern bool SetSysColors(int cElements, int[] lpaElements, int[] lpaRgbValues);
    }
"@

[PInvoke]::SetSysColors(1, @(1), @($ColorHex))

When I said, Alexa, turn desktop green it turned my desktop green:

When I said, Alexa, turn desktop blue it turned my desktop blue: