First the five-pointed cutout scheme.
Purple, gold and green: Mardi Gras colors.
This can be for primary State Highways.
And this can be for the secondaries.
Now the state outline scheme.
This first one can be for the primary State Highways.
Again, Purple, gold and green.
This second one can be for the secondaries.
This third one can be for the Parish (County) Roads and State Highways given back to the Parishes.
Or, it can be used instead of the ones above for the State Highways.
And this is an example of a hyphenated route in the same colors.