Support string color definitions in model source model-color

GitOrigin-RevId: 8e75948c435a4d7b73f1079673af06e09cd34081

Author: stephanheigl

3d-style/source/model_source.ts

@@ -261,7 +261,7 @@ class ModelSource extends Evented<SourceEvents> implements ISource {
         }
         Object.entries(overrides).forEach(([key, value]) => {
 
-            const modelColor = value['model-color'] as number[];
+            const modelColor = ModelSource.arrayFromColorSpecification(value['model-color'] as ColorSpecification | undefined);
             const materialOverride: MaterialOverride = {
                 color: modelColor !== undefined ? new Color(modelColor[0], modelColor[1], modelColor[2]) : new Color(1, 1, 1),
                 colorMix: 0,

test/integration/render-tests/model-layer/model-state/model-source/style.json

@@ -40,16 +40,16 @@
             "orientation": [0, 0, 0],
             "materialOverrides": {
               "body": {
-                "model-color": [0.00775, 0.03458, 0.43854],
+                "model-color": "rgba(2, 9, 112, 1)",
                 "model-color-mix-intensity": 1.0
               },
               "lights_brakes": {
                 "model-color": [0.88, 0.0, 0.0],
                 "model-color-mix-intensity": 1.0,
                 "model-emissive-strength": 0.8
               },
-                  "lights-brakes_reverse": {
-                "model-color": [0.88, 0.0, 0.0],
+              "lights-brakes_reverse": {
+                "model-color":  [0.88, 0.0, 0.0],
                 "model-color-mix-intensity": 1.0,
                 "model-emissive-strength": 0.8
               }