Module colors 

Color helper functions for the TUI.

This module provides color coding for various sensor readings and status indicators.

CO2 Level Color Coding

CO2 levels are color-coded based on air quality guidelines:

Range (ppm)	Color	Meaning
0-800	Green	Good - Normal outdoor/indoor air quality
801-1000	Yellow	Moderate - Acceptable, some sensitivity
1001-1500	Orange	Elevated - Consider improving ventilation
1501+	Red	High - Poor ventilation, take action

These thresholds are based on indoor air quality standards and the Aranet4 device’s built-in status indicators.

Functions

battery_color

Returns a color based on battery percentage.

co2_color

Returns a color based on CO2 concentration level.

connection_status_color

Returns a color based on the connection status.

radon_color

Returns a color based on radon concentration level.

status_color

Returns a color based on the sensor status indicator.