diff --git a/terminal_tree.py b/terminal_tree.py
index 2b75d4b..702af80 100644
--- a/terminal_tree.py
+++ b/terminal_tree.py
@@ -3,44 +3,56 @@
 import random
 import time
 
-BALL = '⏺'
+BALL = "⏺"
 COLOR = {
-    'blue': '\033[94m',
-    'yellow': '\033[93m',
-    'cyan': '\033[96m',
-    'green': '\033[92m',
-    'magenta': '\033[95m',
-    'white': '\033[97m',
-    'red': '\033[91m'
+    "blue": "\033[94m",
+    "yellow": "\033[93m",
+    "cyan": "\033[96m",
+    "green": "\033[92m",
+    "magenta": "\033[95m",
+    "white": "\033[97m",
+    "red": "\033[91m",
 }
-STAR = '★'
+if os.name == "nt":
+    # BALL = "\u2022"
+    BALL = "\u25C9"
+    COLOR = {
+        "blue": "",
+        "yellow": "",
+        "cyan": "",
+        "green": "",
+        "magenta": "",
+        "white": "",
+        "red": "",
+    }
+STAR = "★"
 
 
 def random_change_char(string, value):
     indexes = random.sample(range(0, len(string)), value)
     string = list(string)
     for idx in indexes:
-        if string[idx] != ' ' and string[idx] == '_':
+        if string[idx] != " " and string[idx] == "_":
             string[idx] = BALL
-    return ''.join(string)
+    return "".join(string)
 
 
 def tree(height=13, screen_width=80):
-    star = (STAR, 3*STAR)
+    star = (STAR, 3 * STAR)
     if height % 2 != 0:
         height += 1
-    body = ['/_\\', '/_\_\\']
-    trunk = '[___]'
-    begin = '/'
-    end = '\\'
-    pattern = '_/'
+    body = ["/_\\", "/_\_\\"]
+    trunk = "[___]"
+    begin = "/"
+    end = "\\"
+    pattern = "_/"
     j = 5
     for i in range(7, height + 1, 2):
         middle = pattern + (i - j) * pattern
-        line = ''.join([begin, middle[:-1], end])
+        line = "".join([begin, middle[:-1], end])
         body.append(line)
-        middle = middle.replace('/', '\\')
-        line = ''.join([begin, middle[:-1], end])
+        middle = middle.replace("/", "\\")
+        line = "".join([begin, middle[:-1], end])
         body.append(line)
         j += 1
 
@@ -49,7 +61,7 @@ def tree(height=13, screen_width=80):
 
 def balls(tree):
     for idx, _ in enumerate(tree[:-3], 2):
-        tree[idx] = random_change_char(tree[idx], len(tree[idx])//8)
+        tree[idx] = random_change_char(tree[idx], len(tree[idx]) // 8)
     return tree
 
 
@@ -58,22 +70,40 @@ def colored_stars_balls(tree):
         string = list(tree[idx])
         for pos, _ in enumerate(string):
             if string[pos] == STAR:
-                string[pos] = ''.join([COLOR['yellow'], STAR, '\033[0m'])
+                string[pos] = "".join([COLOR["yellow"], STAR, "\033[0m"])
             elif string[pos] == BALL:
-                string[pos] = ''.join([random.choice(list(COLOR.values())), BALL, '\033[0m'])
-        tree[idx] = ''.join(string)
+                string[pos] = "".join(
+                    [random.choice(list(COLOR.values())), BALL, "\033[0m"]
+                )
+        tree[idx] = "".join(string)
     return tree
 
 
 def cli():
-    parser = argparse.ArgumentParser(prog="Python Christmas Tree by Chico Lucio from Ciencia Programada",
-                                     epilog="Ctrl-C interrupts the Christmas :-(")
-    parser.add_argument('-s', '--size', default=13, type=int,
-                        help="Tree height. If even it will be subtracted 1. If less than 7, considered 5. Default: 13")
-    parser.add_argument('-w', '--width', default=80, type=int,
-                        help="Screen width. Used to center the tree. Default: 80")
-    parser.add_argument('-t', '--terminal', action='store_true',
-                        help="Uses the terminal size to center the tree. -s and -w will be ignored")
+    parser = argparse.ArgumentParser(
+        prog="Python Christmas Tree by Chico Lucio from Ciencia Programada",
+        epilog="Ctrl-C interrupts the Christmas :-(",
+    )
+    parser.add_argument(
+        "-s",
+        "--size",
+        default=13,
+        type=int,
+        help="Tree height. If even it will be subtracted 1. If less than 7, considered 5. Default: 13",
+    )
+    parser.add_argument(
+        "-w",
+        "--width",
+        default=80,
+        type=int,
+        help="Screen width. Used to center the tree. Default: 80",
+    )
+    parser.add_argument(
+        "-t",
+        "--terminal",
+        action="store_true",
+        help="Uses the terminal size to center the tree. -s and -w will be ignored",
+    )
     args = parser.parse_args()
 
     if args.terminal:
@@ -84,14 +114,14 @@ def cli():
         screen_width = args.width
     while True:
         try:
-            time.sleep(random.uniform(.1, 1))
-            os.system('cls' if os.name == 'nt' else 'clear')
-            print('\n'.join(colored_stars_balls(balls(tree(height, screen_width)))))
+            time.sleep(random.uniform(0.1, 1))
+            os.system("cls" if os.name == "nt" else "clear")
+            print("\n".join(colored_stars_balls(balls(tree(height, screen_width)))))
         except KeyboardInterrupt:
-            os.system('cls' if os.name == 'nt' else 'clear')
-            print(f"\n{'Merry Christmas!!':^{screen_width}}", end='\n\n')
+            os.system("cls" if os.name == "nt" else "clear")
+            print(f"\n{'Merry Christmas!!':^{screen_width}}", end="\n\n")
             break
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     cli()