diff --git a/src/color_updates.rs b/src/color_updates.rs
index f636049..0e315da 100644
--- a/src/color_updates.rs
+++ b/src/color_updates.rs
@@ -114,4 +114,23 @@ pub fn update_panel() -> Result<(), Box<dyn Error>> {
 
     fs::write(&panel_path, content)?;
     Ok(())
+}
+
+pub fn update_border() -> Result<(), Box<dyn Error>> {
+    
+    let theme_path = config::get_theme_path()?;
+    let border_color = config::get_base_color()?;
+
+    let mut content = fs::read_to_string(&theme_path)?;
+
+    let border_re = Regex::new(regex_patterns::PATTERN_BORDER_COLOR)?;
+
+    content = border_re
+        .replace_all(&content, |caps: &regex::Captures| {
+            caps[0].replace(&caps[1], &border_color)
+        })
+        .to_string();
+
+    fs::write(&theme_path, content)?;
+    Ok(())
 }
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 36c5a34..1900270 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,7 +6,7 @@ mod utils;
 use std::error::Error;
 use clap::{Parser, CommandFactory};
 
-use crate::color_updates::{update_search_bar, update_whiskar_menu, update_panel};
+use crate::color_updates::{update_search_bar, update_whiskar_menu, update_panel, update_border};
 use crate::config::create_default_config;
 
 #[derive(Parser)]
@@ -27,6 +27,9 @@ struct Cli {
 
     #[arg(long)]
     createconfig: bool,
+
+    #[arg(long)]
+    updateborder: bool
 }
 fn main() -> Result<(), Box<dyn Error>> {
     let cli = Cli::parse();
@@ -54,5 +57,9 @@ fn main() -> Result<(), Box<dyn Error>> {
         update_panel()?;
     }
 
+    if cli.updateall || cli.updateborder {
+        update_border()?;
+    }
+
     Ok(())
 }
\ No newline at end of file
diff --git a/src/regex_patterns.rs b/src/regex_patterns.rs
index 3e7498e..3df3042 100644
--- a/src/regex_patterns.rs
+++ b/src/regex_patterns.rs
@@ -13,3 +13,5 @@ pub const PATTERN_PANEL_BACKGROUND_RGBA: &str = r#"<property name="background-rg
         <value type="double" value="([^"]+)"/>\s*
         <value type="double" value="([^"]+)"/>\s*
       </property>"#;
+
+      pub const PATTERN_BORDER_COLOR: &str = r"entry\s*\{\s*border:\s*[^;]+;\s*padding:\s*[^;]+;\s*caret-color:\s*[^;]+;\s*border-radius:\s*[^;]+;\s*transition:\s*[^;]+;\s*color:\s*[^;]+;\s*border-color:\s*([^;]+);\s*background-color:\s*[^;]+;\s*\}";
\ No newline at end of file