diff --git a/src/config.py b/src/config.py
index b59f79d..bd2366f 100755
--- a/src/config.py
+++ b/src/config.py
@@ -134,8 +134,13 @@ def write_theme(tmp_config,theme):
     f.close()
 
 
-def apply(config_file,theme):
+def apply(config_file,theme,dry=False):
     tmp=extract(config_file)
     write_theme(tmp,theme)
-    shutil.move(tmp,config_file)
+    f=open(tmp,mode="r")
+    new_config=f.read()
+    f.close()
+    if not(dry):
+        shutil.move(tmp,config_file)
+    return(new_config)
 
diff --git a/src/i3-colors.py b/src/i3-colors.py
index 9450c9c..ceb96e0 100755
--- a/src/i3-colors.py
+++ b/src/i3-colors.py
@@ -1,59 +1,63 @@
 #!/usr/bin/python 
 import config, theme, os, argparse, subprocess,sys
 
-##### Utils Functions #####
-def log(msg,title=""):
-    if len(title)>0:
-        print("\033[92m{}\033[00m: {}" .format(title,msg))
-    else:
-        print(msg)
-###########################
-
 ##### Apply Theme #####
 def apply(args):
+    if not(args.theme_path):
+        argsMainParser.print_help()
+        exit(1)
     loaded_theme=theme.load(args.theme_path)
     config_file=os.environ["HOME"]+"/.config/i3/config"
-    if args.config_path:
-        config_file=args.config_path
-    config.apply(config_file,loaded_theme)
-    for meta_key,meta_value in loaded_theme["meta"].items():
-        log(meta_value,title=meta_key.title())
-        if args.restart:
-            subprocess.Popen("i3-msg restart".split(),stdout=subprocess.PIPE, stderr=subprocess.PIPE) 
+    if not(args.dry):
+        config.apply(config_file,loaded_theme)
+        for meta_key,meta_value in loaded_theme["meta"].items():
+            print("\033[92m{}\033[00m: {}" .format(meta_key.title(),meta_value))
+            if args.restart:
+                subprocess.Popen("i3-msg restart".split(),stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    else:
+        new_config=config.apply(config_file,loaded_theme,dry=True)
+        print(new_config)
 #######################
+
+##### Aleatory #####
 def aleatory(args):
     t=theme.random_theme().as_dict()
     config.apply(os.environ["HOME"]+"/.config/i3/config",t)
     if args.restart:
-        subprocess.Popen("i3-msg restart".split(),stdout=subprocess.PIPE, stderr=subprocess.PIPE) 
+        subprocess.Popen("i3-msg restart".split(),stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+####################
+
 ##### Extract Theme #####
 def extract(args):
+    if not(args.config_path):
+        argsMainParser.print_help()
+        exit(1)
     t=config.extract_theme(args.config_path)
     print(t.as_yaml())
 #######################
 
-##### Parse Arguments #####
-argsMainParser = argparse.ArgumentParser(description='I3 Window Manager Colors Themer.')
-argsSubParsers = argsMainParser.add_subparsers()
-argsApplyParser = argsSubParsers.add_parser("apply")
-argsApplyParser.add_argument('theme_path', type=str, nargs='?',
-                    help='I3 YAML theme path.')
-argsApplyParser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
-argsApplyParser.add_argument('config_path', type=str, nargs='?',
-                    help='I3 configuration file.')
-argsApplyParser.set_defaults(func=apply)
-
-argsExtractParser = argsSubParsers.add_parser("extract")
-argsExtractParser.add_argument('config_path', type=str, nargs='?',
-                    help='Extract theme from config file.')
-argsExtractParser.set_defaults(func=extract)
-
-argsAleatoryParser = argsSubParsers.add_parser("aleatory")
-argsAleatoryParser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
-argsAleatoryParser.set_defaults(func=aleatory)
-
-
+##### Entry Point #####
 if __name__ == "__main__":
+    ##### Main Parser
+    argsMainParser = argparse.ArgumentParser(description='I3 Window Manager Colors Themer.')
+    argsSubParsers = argsMainParser.add_subparsers()
+    ##### Apply Parser
+    argsApplyParser = argsSubParsers.add_parser("apply")
+    argsApplyParser.add_argument('theme_path', type=str, nargs='?',
+                                 help='I3 YAML theme path.')
+    argsApplyParser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
+    argsApplyParser.add_argument('-d', '--dry' ,action='store_true', help='Do not apply theme, just print config file.')
+    argsApplyParser.set_defaults(func=apply)
+    ##### Extract Parser
+    argsExtractParser = argsSubParsers.add_parser("extract")
+    argsExtractParser.add_argument('config_path', type=str, nargs='?',
+                                   help='Extract theme from config file.')
+    argsExtractParser.set_defaults(func=extract)
+    ##### Aleatory Parser
+    argsAleatoryParser = argsSubParsers.add_parser("aleatory")
+    argsAleatoryParser.add_argument('-r', '--restart' ,action='store_true', help='Restart i3 after applying theme.')
+    argsAleatoryParser.set_defaults(func=aleatory)
+    ##### Launch i3-colors
     args = argsMainParser.parse_args()
     if len(sys.argv)>1:
         args.func(args)
diff --git a/tests/run.sh b/tests/run.sh
index 296eccf..93cad38 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -36,7 +36,7 @@ do
             exit 1
         fi  
     else
-        nb_pass=$(( nb_test + 1 ))
+        nb_pass=$(( nb_pass + 1 ))
         passed "${test_name}"
     fi
 done
diff --git a/tests/test-simple-apply.out b/tests/test-simple-apply.out
index 064868d..ac630f1 100644
--- a/tests/test-simple-apply.out
+++ b/tests/test-simple-apply.out
@@ -1,5 +1,3 @@
-Author: lasers
-Url: https://github.com/okraits/j4-make-config
 ##### Variables #####
 ##### Define workspaces names
 set $ws1 "1 "
@@ -289,7 +287,7 @@ bar {
   position top
   font pango:DejaVu Sans Mono 14
   status_command i3status -c ~/.config/i3/i3status.conf
-  separator_symbol "|"
+separator_symbol "|"
   colors {
     active_workspace #414141 #2d2d2d #ffffff
     background #2d2d2d
@@ -305,7 +303,7 @@ client.focused #4183F6 #2d76f6 #ffffff #d8442e #4183F6
 client.focused_inactive #C1C1C1 #bbbbbb #ffffff #009c58 #C1C1C1
 client.unfocused #414141 #2d2d2d #ffffff #bbbbbb #414141
 client.urgent #FFCB21 #ffc609 #ffffff #d8442e #FFCB21
-Description: seti theme by Jody Ribton - based on the seti Atom theme at https://atom.io/themes/seti-ui
+
 ##### Variables #####
 ##### Define workspaces names
 set $ws1 "1 "
@@ -595,7 +593,7 @@ bar {
   position top
   font pango:DejaVu Sans Mono 14
   status_command i3status -c ~/.config/i3/i3status.conf
-  separator_symbol "|"
+separator_symbol "|"
   colors {
     separator #AAAAAA
     background #1f2326
@@ -611,3 +609,4 @@ client.focused #4F99D3 #4F99D3 #151718 #9FCA56 #4F99D3
 client.focused_inactive #9FCA56 #9FCA56 #151718 #A074C4 #9FCA56
 client.unfocused #1f2326 #1f2326 #AAAAAA #A074C4 #1f2326
 client.urgent #CE4045 #CE4045 #FFFFFF #DCCD69 #CE4045
+
diff --git a/tests/test-simple-apply.sh b/tests/test-simple-apply.sh
index e5ab960..2516906 100644
--- a/tests/test-simple-apply.sh
+++ b/tests/test-simple-apply.sh
@@ -3,15 +3,7 @@
 wai=$(dirname $(readlink -f $0))
 source "${wai}/include.sh"
 
-##### Load config file
-config_file=$(load ${data}/config)
-
 ##### Test apply on theme with no variables
-$exec apply ${data}/google ${config_file}
-cat $config_file
+$exec apply -d ${data}/google
 ##### Test apply on theme with variables
-$exec apply ${data}/seti ${config_file}
-cat $config_file 
-
-##### Clear temporary file
-rm $config_file
+$exec apply -d ${data}/seti
diff --git a/tests/test-simple-extract.out b/tests/test-simple-extract.out
new file mode 100644
index 0000000..04aa616
--- /dev/null
+++ b/tests/test-simple-extract.out
@@ -0,0 +1,48 @@
+bar_colors:
+  active_workspace:
+    background: '#2d2d2d'
+    border: '#414141'
+    text: '#ffffff'
+  background: '#2d2d2d'
+  focused_workspace:
+    background: '#2d76f6'
+    border: '#4183F6'
+    text: '#ffffff'
+  inactive_workspace:
+    background: '#2d2d2d'
+    border: '#414141'
+    text: '#bbbbbb'
+  separator: '#bbbbbb'
+  statusline: '#ffffff'
+  urgent_workspace:
+    background: '#ffc609'
+    border: '#FFCB21'
+    text: '#ffffff'
+meta:
+  description: Generated From i3-colors
+window_colors:
+  focused:
+    background: '#2d76f6'
+    border: '#4183F6'
+    child_border: '#4183F6'
+    indicator: '#d8442e'
+    text: '#ffffff'
+  focused_inactive:
+    background: '#bbbbbb'
+    border: '#C1C1C1'
+    child_border: '#C1C1C1'
+    indicator: '#009c58'
+    text: '#ffffff'
+  unfocused:
+    background: '#2d2d2d'
+    border: '#414141'
+    child_border: '#414141'
+    indicator: '#bbbbbb'
+    text: '#ffffff'
+  urgent:
+    background: '#ffc609'
+    border: '#FFCB21'
+    child_border: '#FFCB21'
+    indicator: '#d8442e'
+    text: '#ffffff'
+
diff --git a/tests/test-simple-extract.sh b/tests/test-simple-extract.sh
new file mode 100644
index 0000000..61e2844
--- /dev/null
+++ b/tests/test-simple-extract.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+wai=$(dirname $(readlink -f $0))
+source "${wai}/include.sh"
+
+##### Test extract on a config file
+$exec extract ${data}/config
+