Improve layer colors

src/map.jsx

@@ -1,5 +1,6 @@
 import React from 'react'
 import ReactMapboxGl from "react-mapbox-gl"
+import theme from './theme.js'
 
 export class Map extends React.Component {
 	constructor(props) {
@@ -11,8 +12,8 @@ export class Map extends React.Component {
 			return <ReactMapboxGl
 				style={this.props.mapStyle}
 				accessToken="pk.eyJ1IjoibW9yZ2Vua2FmZmVlIiwiYSI6IjIzcmN0NlkifQ.0LRTNgCc-envt9d5MzR75w"/>
-	}
-		return <div />
+		}
+		return <div style={{backgroundColor: theme.colors.black}}/>
 	}
 }