Flight history maps..... help reqd

[Northumbrian]

On flight history, showing flight overlay on google earth...
What do the many colours of the route represent?
Is there a key anywhere ?

 

[Apollo11capcom]

On flight history, showing flight overlay on google earth...
What do the many colours of the route represent?
Is there a key anywhere ?

Altitude. Red it highest, green is lowest.

 

[Northumbrian]

Altitude. Red it highest, green is lowest.

Thanks !