Improve particle and wind overlay visibility

- Particles: vivid blue (30, 100, 255) instead of white — visible on
  light charts background; thicker stroke 3.5px vs 2.5px
- Wind raster overlay: opacity 0.85 vs 0.60

https://claude.ai/code/session_01HXPjBsogsJVRwCiekDGkJX

2 files changed, 3 insertions, 3 deletions

diff --git a/android-app/app/src/main/kotlin/org/terst/nav/ui/MapLayerManager.kt b/android-app/app/src/main/kotlin/org/terst/nav/ui/MapLayerManager.kt
index 8892285..83cfa70 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/ui/MapLayerManager.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/ui/MapLayerManager.kt
@@ -84,7 +84,7 @@ class MapLayerManager(context: Context) {
         })
 
         builder.withLayer(RasterLayer(LAYER_WIND, SOURCE_WIND).apply {
-            setProperties(PropertyFactory.rasterOpacity(0.6f))
+            setProperties(PropertyFactory.rasterOpacity(0.85f))
             setProperties(PropertyFactory.visibility(if (windEnabled) "visible" else "none"))
         })
 
diff --git a/android-app/app/src/main/kotlin/org/terst/nav/ui/map/ParticleWindView.kt b/android-app/app/src/main/kotlin/org/terst/nav/ui/map/ParticleWindView.kt
index aba8027..24b25db 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/ui/map/ParticleWindView.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/ui/map/ParticleWindView.kt
@@ -44,7 +44,7 @@ class ParticleWindView @JvmOverloads constructor(
     private val MAX_AGE = 8f   // seconds before forced respawn
 
     private val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
-        strokeWidth = 2.5f
+        strokeWidth = 3.5f
         strokeCap = Paint.Cap.ROUND
         style = Paint.Style.STROKE
     }
@@ -138,7 +138,7 @@ class ParticleWindView @JvmOverloads constructor(
             )
 
             val alpha = ((1f - particleAge[i] / MAX_AGE) * 220).toInt().coerceIn(40, 220)
-            paint.color = Color.argb(alpha, 255, 255, 255)
+            paint.color = Color.argb(alpha, 30, 100, 255)
 
             canvas.drawLine(pt.x - tailDx, pt.y - tailDy, pt.x, pt.y, paint)
         }