Refactor repository structure for clarity and professionalism

- Move scripts to tools/ directory
- Rename pyton.py to generate_swatches.py
- Rename down.py to downscale_colors.py
- Remove hardcoded API key from generate_swatches.py
- Update README.md to reference local color assets instead of placeholders

tools/generate_swatches.py

@@ -0,0 +1,48 @@
+from openai import OpenAI
+import base64
+import os
+
+# =========================
+# CONFIGURACIÓN API
+# =========================
+# Set OPENAI_API_KEY as environment variable or replace below
+OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
+if not OPENAI_API_KEY:
+    raise ValueError("OPENAI_API_KEY environment variable not set")
+client = OpenAI(api_key=OPENAI_API_KEY)
+
+# =========================
+# CONFIGURACIÓN
+# =========================
+SIZE = "1024x1024"  # Tamaño válido
+OUTPUT_DIR = "assets/colors"
+
+COLORS = {
+    "bone-white": "#F6F1EC",
+    "soft-cream": "#EFE7DE",
+    "mocha-taupe": "#B8A89A",
+    "deep-earth": "#6F5E4F",
+    "charcoal-brown": "#3F362E",
+}
+
+PROMPT_TEMPLATE = (
+    "A flat square color swatch, solid fill, hex color {hex}. "
+    "No gradients, no texture, no shadow, no border. "
+    "Minimal, neutral, technical style."
+)
+
+os.makedirs(OUTPUT_DIR, exist_ok=True)
+
+for name, hex_color in COLORS.items():
+    prompt = PROMPT_TEMPLATE.format(hex=hex_color)
+
+    result = client.images.generate(model="gpt-image-1", prompt=prompt, size=SIZE)
+
+    image_base64 = result.data[0].b64_json
+    image_bytes = base64.b64decode(image_base64)
+
+    output_path = os.path.join(OUTPUT_DIR, f"{name}.png")
+    with open(output_path, "wb") as f:
+        f.write(image_bytes)
+
+    print(f"Generated {output_path}")