Set all logitech device LED colors via ratbag [Bash]

#!/bin/bash
#Written by chatgpt with my instruction
#My use for this is to reset the colors on my equipment after it goes back to default from power loss

# Default color is 500000 (dark red)
default_color="500000"

# Check if a color was passed as the first argument
if [[ $1 =~ ^[0-9a-fA-F]{6}$ ]]; then
    color="$1"
    echo "Using custom color: $color"
else
    color="$default_color"
    echo "No valid color provided, using default: $color"
fi

# Get the list of devices
device_list=$(ratbagctl list)

# Parse the device names (those containing a colon followed by a name)
for device in $(echo "$device_list" | grep -oP '^\S+(?=:)' | uniq); do
    echo "Processing device: $device"

    # Get the list of LEDs for this device
    led_info=$(ratbagctl "$device" led get)

    # Extract LED numbers and current colors
    led_list=$(echo "$led_info" | grep -oP '(?<=LED: )\d+')
    led_colors=$(echo "$led_info" | grep -oP '(?<=color: )\S+')

    # Loop through each LED and check the current color
    i=1  # Index to keep track of current LED in the led_colors list
    for led in $led_list; do
        # Get the current color of the LED (nth entry from led_colors)
        current_color=$(echo "$led_colors" | sed -n "${i}p")

        # Compare current color with the target color
        if [[ "$current_color" == "$color" ]]; then
            echo "LED $led on $device is already set to $color. Skipping..."
        else
            echo "Setting LED $led on $device to color $color"
            ratbagctl "$device" led "$led" set color "$color"
        fi

        ((i++))  # Move to the next LED color
    done
done