diff --git a/README.md b/README.md
index 8b0f422..b29a4af 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,9 @@
 # i3-colors
 
 Simple Python i3 colors manager.
+**Install/Usage:**
 
-
-## Doc
-Execute: ./src/i3-theme and enjoy
\ No newline at end of file
+      git clone https://gitlab.com/manzerbredes/i3-colors
+      ./i3-colors/src/i3-colors.py -h
+    
+**Notes:** Some of the themes come [i3-style project](https://github.com/altdesktop/i3-style)
\ No newline at end of file
diff --git a/src/i3-colors.py b/src/i3-colors.py
new file mode 100755
index 0000000..1e367b5
--- /dev/null
+++ b/src/i3-colors.py
@@ -0,0 +1,30 @@
+#!/usr/bin/python 
+import config, theme, os, argparse, subprocess
+
+
+##### Utils Functions #####
+def log(msg,title=""):
+    if len(title)>0:
+        print("\033[92m{}\033[00m: {}" .format(title,msg))
+    else:
+        print(msg)
+###########################
+
+
+##### Parse Arguments #####
+args_parser = argparse.ArgumentParser(description='I3 Window Manager Colors Themer.')
+args_parser.add_argument('theme_path', type=str, nargs='?',
+                    help='I3 YAML theme path.')
+args_parser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
+args = args_parser.parse_args()
+###########################
+
+##### Apply Theme #####
+loaded_theme=theme.load(args.theme_path)
+for meta_key,meta_value in loaded_theme["meta"].items():
+    log(meta_value,title=meta_key.title())
+config.apply_theme(os.environ["HOME"]+"/.config/i3/config",loaded_theme)
+if args.restart:
+    subprocess.Popen("i3-msg restart".split()) 
+#######################
+
diff --git a/src/i3-theme.py b/src/i3-theme.py
old mode 100755
new mode 100644
index 1e367b5..915838f
--- a/src/i3-theme.py
+++ b/src/i3-theme.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python 
+#!/usr/bin/env python 
 import config, theme, os, argparse, subprocess
 
 
diff --git a/src/parser.py b/src/parser.py
new file mode 100644
index 0000000..47ee12a
--- /dev/null
+++ b/src/parser.py
@@ -0,0 +1,105 @@
+import re,tempfile,shutil
+
+theme_keys=["client.focused",
+            "client.focused_inactive",
+            "client.unfocused",
+            "client.urgent",
+            "separator",
+            "background",
+            "statusline",
+            "focused_workspace",
+            "active_workspace",
+            "inactive_workspace",
+            "urgent_workspace"]
+
+def contains(r,line):
+    return(re.match(r,line)!=None)
+
+def extract_config(config_file):
+    f=open(config_file,"r")
+    tmp=tempfile.NamedTemporaryFile(mode="w",delete=False)
+    for line in f:
+        is_theme_line=False
+        for key in theme_keys:
+            if contains(".*"+key+"\s",line):
+                is_theme_line=True
+        if not(is_theme_line):
+            tmp.write(line)
+    
+    f.close()
+    tmp.close()
+    return(tmp.name)
+
+def safe_get(theme,key):
+    if key in theme:
+        return(theme[key])
+    return("")
+
+def apply_to_config(tmp_config,theme):
+    f=open(tmp_config,mode="r")
+    tmp=tempfile.NamedTemporaryFile(mode="w",delete=False)
+
+    ##### Apply bar theme #####
+    bar_theme=theme["bar_colors"]
+    for line in f:
+        if contains(".*colors\s{",line):
+            tmp.write(line)
+            for key,value in bar_theme.items():
+                if not(isinstance(value,dict)):
+                    tmp.write("\t"+key+" "+value+"\n")
+                else:
+                    tmp.write("\t"+key+" "+value["border"]+" "+value["background"]+" "+value["text"]+"\n")
+        else:
+            tmp.write(line)
+    tmp.close()
+    f.close()
+    shutil.move(tmp.name,tmp_config)
+    
+    ##### Apply client theme #####
+    client_theme=theme["window_colors"]
+    f=open(tmp_config,mode="a")
+    for key,value in client_theme.items():
+        f.write("client."+key+" "+value["border"]+" "+value["background"]+" "+value["text"]+" "+value["indicator"]+" "+safe_get(value,"child_border")+"\n")
+    f.close()
+    
+def apply_theme(config_file,theme):
+    tmp=extract_config(config_file)
+    apply_to_config(tmp,theme)
+    shutil.move(tmp,config_file)
+
+theme={
+    "bar":{
+        "separator": "#666666",
+        "background": "#333333",
+        "statusline": "#bbbbbb",
+        "focused_workspace": { "border":"#888888",
+                               "background": "#dddddd",
+                               "text": "#222222"},
+        "active_workspace":  { "border": "#333333",
+                               "background": "#555555",
+                               "text": "#bbbbbb"},
+        "inactive_workspace": { "border": "#333333",
+                                "background": "#555555",
+                                "text": "#bbbbbb"},
+        "urgent_workspace": { "border": "#2f343a",
+                              "background": "#900000",
+                              "text": "#ffffff"}},
+    "client": {
+        "client.focused":  { "background": "#888888",
+                             "text": "#dddddd",
+                             "indicator": "#222222",
+                             "child_border": "#2e9ef4"},
+        "client.focused_inactive":  { "background": "#333333",
+                                      "text": "#555555",
+                                      "indicator": "#bbbbbb",
+                                      "child_border": "#484e50"},
+        "client.unfocused":  { "background": "#333333",
+                               "text": "#333333",
+                               "indicator": "#888888",
+                               "child_border": "#292d2e"},
+        "client.urgent":  { "background": "#2f343a",
+                            "text": "#900000",
+                            "indicator": "#ffffff",
+                            "child_border": "#900000"}}
+}
+