>>46641559I just do the colours for the sake of setting a mood, the maps are originally done in black and white and I just add colour to make them look more distinct and to convey the sort of vibe I'm going for, so for instance with Route 12 there's the forest of autumn trees giving it this more drier appearance in spite of being a coastal route and the area approach Lavender Town is more badlands-mountain esque hence the reddish tinged ground tiles.
As for that map specifically here's what it would look like without the colour.
