Tree reference structure: Created README specifications for Oak (seasonal), Pine (evergreen), Palm (tropical), and Dead trees. Documented size standards, visual specs, and Style 32 requirements for each type.

references/trees/palm/README.md

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+# 🌴 Palm Tree References (Tropical)
+
+**Tree Type:** Palm - Tropical tree
+**Seasonal Changes:** MINIMAL (tropical climate)
+
+---
+
+## Required References:
+
+### **Master References Needed:**
+- `palm_default.png` - Standard palm tree
+- Optional: `palm_coconuts.png` - With fruit
+
+### **Size Standards:**
+- Small Palm: 96x96px
+- Medium Palm: 160x160px
+- Large Palm: 192x192px
+
+---
+
+## Visual Specifications:
+
+**Trunk:**
+- Color: `#CD853F` (Peru)
+- Texture: Curved/bent (characteristic palm shape)
+- Style: Textured bark rings (simplified)
+
+**Fronds (Leaves):**
+- Color: `#228B22` (Forest Green)
+- Count: 5-7 large fronds at top
+- Style: Fan-shaped, spreading outward
+
+**Optional Coconuts:**
+- Color: `#8B4513` (Saddle Brown)
+- Size: Small clusters
+- Position: Below frond crown
+
+---
+
+## Style Requirements:
+
+✅ **MUST HAVE:**
+- SMOOTH vector-style lines
+- THICK 5px black outlines `#000000`
+- Flat cel shading
+- Curved trunk (NOT straight like pine)
+- Transparent background
+
+❌ **NEVER:**
+- Pixelated
+- Individual leaves
+- Straight vertical trunk