@ctietze A python script creates the map. It currently reads:
"In Favour": "#e31a1c", # Bright red
"Not in Favour": "#33a02c", # Green
"Undecided": "#1f78b4", # Blue
"Other": "#d3d3d3" # Light grey

Any other suggestions?

Note that an image description is available.

#30DayMapChallenge 2 colours Edmonton #7c7c7c (gis_osm_buildings_a_free_1) download.geofabrik.de North Saskatchewan River #1f78b4 (BF_HYDRO_POLYGON) www.altalis.com/map;id=116 #OSM #altalis #ColorHex