diff --git a/scenes/towers/cannon_1.tscn b/scenes/towers/cannon_1.tscn
index dc8dca2..98536f7 100644
--- a/scenes/towers/cannon_1.tscn
+++ b/scenes/towers/cannon_1.tscn
@@ -1,6 +1,7 @@
-[gd_scene load_steps=14 format=3 uid="uid://bexddlltacp6k"]
+[gd_scene load_steps=15 format=3 uid="uid://bexddlltacp6k"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_decej"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_gelth"]
 [ext_resource type="AudioStream" uid="uid://bx4oba7yo6duu" path="res://assets/audio/cannon.mp3" id="3_h4ljg"]
 [ext_resource type="Texture2D" uid="uid://2ovf2ymtftgo" path="res://assets/spritesheets/towers/cannon-1.png" id="3_q7708"]
 
@@ -91,13 +92,13 @@ shape = SubResource("CircleShape2D_wmsbt")
 one_shot = true
 
 [node name="HealthBar" type="ProgressBar" parent="."]
-modulate = Color(0.431373, 0.815686, 0, 1)
 offset_left = 4.0
 offset_top = -15.0
 offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_gelth")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/scenes/towers/cannon_2.tscn b/scenes/towers/cannon_2.tscn
index 79c7e1a..685973d 100644
--- a/scenes/towers/cannon_2.tscn
+++ b/scenes/towers/cannon_2.tscn
@@ -1,7 +1,8 @@
-[gd_scene load_steps=14 format=3 uid="uid://dij57511gfg4t"]
+[gd_scene load_steps=15 format=3 uid="uid://dij57511gfg4t"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_eyei4"]
 [ext_resource type="AudioStream" uid="uid://bx4oba7yo6duu" path="res://assets/audio/cannon.mp3" id="3_cih6o"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_iouuw"]
 [ext_resource type="Texture2D" uid="uid://br7wgq61n6ufv" path="res://assets/spritesheets/towers/cannon-2.png" id="3_us71t"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_74asi"]
@@ -97,6 +98,7 @@ offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_iouuw")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/scenes/towers/cannon_3.tscn b/scenes/towers/cannon_3.tscn
index a981eff..b05bdf3 100644
--- a/scenes/towers/cannon_3.tscn
+++ b/scenes/towers/cannon_3.tscn
@@ -1,6 +1,7 @@
-[gd_scene load_steps=14 format=3 uid="uid://mxre00inxhlf"]
+[gd_scene load_steps=15 format=3 uid="uid://mxre00inxhlf"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_pa8xy"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_hrtp8"]
 [ext_resource type="AudioStream" uid="uid://bx4oba7yo6duu" path="res://assets/audio/cannon.mp3" id="3_r4bfa"]
 [ext_resource type="Texture2D" uid="uid://by4hjrjfcxsdl" path="res://assets/spritesheets/towers/cannon-3.png" id="3_tjfbt"]
 
@@ -97,6 +98,7 @@ offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_hrtp8")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/scenes/towers/railgun_1.tscn b/scenes/towers/railgun_1.tscn
index d75e085..f911e6a 100644
--- a/scenes/towers/railgun_1.tscn
+++ b/scenes/towers/railgun_1.tscn
@@ -1,8 +1,9 @@
-[gd_scene load_steps=14 format=3 uid="uid://biyhuyx177dw8"]
+[gd_scene load_steps=15 format=3 uid="uid://biyhuyx177dw8"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_8623k"]
 [ext_resource type="AudioStream" uid="uid://0c62t5vtlwh6" path="res://assets/audio/railgun.mp3" id="3_ixlr3"]
 [ext_resource type="Texture2D" uid="uid://c02ebkmjpxium" path="res://assets/spritesheets/towers/railgun-1.png" id="3_vo8au"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_w0gkh"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_60mof"]
 atlas = ExtResource("3_vo8au")
@@ -98,6 +99,7 @@ offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_w0gkh")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/scenes/towers/railgun_2.tscn b/scenes/towers/railgun_2.tscn
index d6b2be1..ac5eb2e 100644
--- a/scenes/towers/railgun_2.tscn
+++ b/scenes/towers/railgun_2.tscn
@@ -1,7 +1,8 @@
-[gd_scene load_steps=14 format=3 uid="uid://ctnlfsnc2gl03"]
+[gd_scene load_steps=15 format=3 uid="uid://ctnlfsnc2gl03"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_rnv08"]
 [ext_resource type="Texture2D" uid="uid://b0dawx5rlcyo3" path="res://assets/spritesheets/towers/railgun-2.png" id="3_aeasn"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_o0ivr"]
 [ext_resource type="AudioStream" uid="uid://0c62t5vtlwh6" path="res://assets/audio/railgun.mp3" id="3_x4pda"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_fss1a"]
@@ -97,6 +98,7 @@ offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_o0ivr")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/scenes/towers/railgun_3.tscn b/scenes/towers/railgun_3.tscn
index 41affe7..571a267 100644
--- a/scenes/towers/railgun_3.tscn
+++ b/scenes/towers/railgun_3.tscn
@@ -1,8 +1,9 @@
-[gd_scene load_steps=14 format=3 uid="uid://cfelbpijg3dp0"]
+[gd_scene load_steps=15 format=3 uid="uid://cfelbpijg3dp0"]
 
 [ext_resource type="Script" path="res://scripts/towers/tower.gd" id="1_3s425"]
 [ext_resource type="AudioStream" uid="uid://0c62t5vtlwh6" path="res://assets/audio/railgun.mp3" id="3_f25ix"]
 [ext_resource type="Texture2D" uid="uid://dk3toqlc7igld" path="res://assets/spritesheets/towers/railgun-3.png" id="3_g5gi2"]
+[ext_resource type="Theme" uid="uid://ciywhmrj7l712" path="res://themes/health_bar.tres" id="3_sher0"]
 
 [sub_resource type="AtlasTexture" id="AtlasTexture_g3wst"]
 atlas = ExtResource("3_g5gi2")
@@ -97,6 +98,7 @@ offset_right = 106.0
 offset_bottom = 12.0
 rotation = 1.5708
 scale = Vector2(0.3, 0.3)
+theme = ExtResource("3_sher0")
 show_percentage = false
 
 [node name="Shoot" type="AudioStreamPlayer2D" parent="."]
diff --git a/themes/health_bar.tres b/themes/health_bar.tres
new file mode 100644
index 0000000..ac96810
--- /dev/null
+++ b/themes/health_bar.tres
@@ -0,0 +1,11 @@
+[gd_resource type="Theme" load_steps=3 format=3 uid="uid://ciywhmrj7l712"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_n65cn"]
+bg_color = Color(0, 0, 0, 1)
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_hlw7d"]
+bg_color = Color(0.2, 0.913725, 0.458824, 1)
+
+[resource]
+ProgressBar/styles/background = SubResource("StyleBoxFlat_n65cn")
+ProgressBar/styles/fill = SubResource("StyleBoxFlat_hlw7d")