Tune the player brush defaults and reset occlusion to neutral

Set occlusion to 0.5 (the new neutral for painted height) so Reset
HUD/Values lands on neutral, and adjust the default brush colour,
metallic/smoothness, active brush and alignment.

Assets/Prefabs/Player.prefab

@@ -485,11 +485,11 @@ MonoBehaviour:
   paintMetallicSmoothness: 0
   paintOcclusion: 0
   paintEmission: 0
-  brushColor: {r: 0.6, g: 0.6, b: 1, a: 1}
-  metallic: 1
-  smoothness: 1
+  brushColor: {r: 0.1, g: 0.6, b: 0.65, a: 1}
+  metallic: 0
+  smoothness: 0
   metallicSmoothnessOpacity: 1
-  occlusion: 1
+  occlusion: 0.5
   occlusionOpacity: 1
   emissionColor: {r: 1, g: 0.6, b: 0, a: 1}
   emissionIntensity: 20
@@ -500,8 +500,8 @@ MonoBehaviour:
   - {fileID: 2800000, guid: ccc205272b051834eb39593f647c7bf1, type: 3}
   - {fileID: 2800000, guid: 04bc55e2853356e4f999b995d0066b33, type: 3}
   - {fileID: 2800000, guid: 9da705c8378866146a1d4be7b2469378, type: 3}
-  activeBrushIndex: 0
-  brushAlignment: 0
+  activeBrushIndex: 2
+  brushAlignment: 1
   brushRotation: 0
   paintOnMoveOnly: 1
   paintInterval: 0