Switch to Gemini + update requirements

app.py

@@ -105,11 +105,13 @@ def process_image(input_img, bg_choice, bg_upload, logo_upload, logo_transparenc
             "Center": ((result.width - logo.width) // 2, (result.height - logo.height) // 2),
         }
         result.paste(logo, pos_map[logo_position], logo)
-
+        
+    '''
     # Apply brand colour tint
     if brand_color:
         tint = Image.new("RGBA", result.size, brand_color + "20")
         result = Image.alpha_composite(result, tint)
+        '''
 
     timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
     result_path = os.path.join(RESULTS_DIR, f"result_{timestamp}.png")