Really Nice Header

The map above demonstrates two things -
First, it uses customized colors created in Mapbox Studio, The Viridis colorscale is applied to the background map and the street features. Of course any other colors - exactly matching your brand colors - can be implemented into the Map.
Secondly, the streets are not imported as a GEOJson data source, but rather managed through Mapbox datasets. That makes the animations much more smooth as the data which to display is managed server side.