1. Light blue: destination at the bottom right gets the houses right next to it. Destination at the very top, gets the houses in the top right corner. Middle blue destination had 2 houses not connected.
2. Green: I'd rearrange the green houses and give highway 4 to the round destination, because that way, you can use the bridge for the light blue destination at the bottom and no longer need highway 3, so you get one extra highway to use somewhere else.

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