Well basicaly edit markersAliveNormal.xc, markersAliveExtended.xc:
Finde something like this, next to textfields:
"textFields": [
{
"alpha": "100",
"color": "{{c:vtype}}",
"font": { "align": "center", "bold": true, "italic": false, "name": "Calibri", "size": 15 },
"format": "{{vehicle}}",
"shadow": { "alpha": 100, "angle": 0, "color": "0x000000", "distance": 1, "size": 5, "strength": 650 },
"visible": true,
"x": 0,
"y": -39
},
Now change "color": "{{c:vtype}}", to "color": "{{c:wn8}}",