diff --git a/biogascontrollerapp/gui/about/about.kv b/biogascontrollerapp/gui/about/about.kv
index 7b7a06a..71b1688 100644
--- a/biogascontrollerapp/gui/about/about.kv
+++ b/biogascontrollerapp/gui/about/about.kv
@@ -2,7 +2,7 @@
     name: "about"
     canvas.before:
         Color:
-            rgba: (50,50,50,0.2)
+            rgba: (10,10,10,0.1)
         Rectangle:
             size: self.size
             pos: self.pos
diff --git a/biogascontrollerapp/gui/credits/credits.kv b/biogascontrollerapp/gui/credits/credits.kv
index fbe7b63..9ef06c2 100644
--- a/biogascontrollerapp/gui/credits/credits.kv
+++ b/biogascontrollerapp/gui/credits/credits.kv
@@ -2,7 +2,7 @@
     name: "credits"
     canvas.before:
         Color:
-            rgba: (50,50,50,0.2)
+            rgba: (10,10,10,0.1)
         Rectangle:
             size: self.size
             pos: self.pos
diff --git a/biogascontrollerapp/gui/home/home.kv b/biogascontrollerapp/gui/home/home.kv
index 6a12cbf..df51bd5 100644
--- a/biogascontrollerapp/gui/home/home.kv
+++ b/biogascontrollerapp/gui/home/home.kv
@@ -2,7 +2,7 @@
     name: "home"
     canvas.before:
         Color:
-            rgba: (50,50,50,0.2)
+            rgba: (10,10,10,0.1)
         Rectangle:
             size: self.size
             pos: self.pos
diff --git a/biogascontrollerapp/gui/main/main.kv b/biogascontrollerapp/gui/main/main.kv
index 4e714b4..ccff974 100644
--- a/biogascontrollerapp/gui/main/main.kv
+++ b/biogascontrollerapp/gui/main/main.kv
@@ -3,7 +3,7 @@
     name: "main"
     canvas.before:
         Color:
-            rgba: (50,50,50,0.2)
+            rgba: (10,10,10,0.1)
         Rectangle:
             size: self.size
             pos: self.pos
@@ -20,38 +20,38 @@
             size_hint: 0.8, 0.3
             pos_hint: {"x":0.1, "y":0.4}
             Label:
-                text: "SENSOR 1: "
+                text: "Sensor 1: "
                 font_size: 20
             Label:
                 id: sensor1
                 text: ""
             Label:
-                text: "SENSOR 2: "
+                text: "Sensor 2: "
                 font_size: 20
             Label:
                 id: sensor2
                 text: ""
             Label:
-                text: "SENSOR 3: "
+                text: "Sensor 3: "
                 font_size: 20
             Label:
                 id: sensor3
                 text: ""
             Label:
-                text: "SENSOR 4: "
+                text: "Sensor 4: "
                 font_size: 20
             Label:
                 id: sensor4
                 text: ""
         Button:
-            text: "Start communication"
+            text: "Connect"
             size_hint: 0.2, 0.1
             pos_hint: {"x": 0.5, "y": 0.05}
             background_color: (255, 0, 0, 0.6)
             on_release:
                 root.start()
         Button:
-            text: "End communication"
+            text: "Disconnect"
             size_hint: 0.2, 0.1
             pos_hint: {"x": 0.7, "y": 0.05}
             background_color: (255, 0, 0, 0.6)
diff --git a/biogascontrollerapp/gui/program/program.kv b/biogascontrollerapp/gui/program/program.kv
index cd50188..b81ddbc 100644
--- a/biogascontrollerapp/gui/program/program.kv
+++ b/biogascontrollerapp/gui/program/program.kv
@@ -3,7 +3,7 @@
     on_enter: self.config_loader = root.load_config()
     canvas.before:
         Color:
-            rgba: (50,50,50,0.2)
+            rgba: (10,10,10,0.1)
         Rectangle:
             size: self.size
             pos: self.pos