diff --git a/app/panels/left_sidebar.py b/app/panels/left_sidebar.py
index 1289b83..921db41 100644
--- a/app/panels/left_sidebar.py
+++ b/app/panels/left_sidebar.py
@@ -53,7 +53,7 @@ def _build_ui(self):
             command=self._toggle_sidebar,
             relief="flat",
             bg="#e0e0e0",
-            fg="#555",
+            fg="black",
             cursor="hand2",
             width=3
         )
@@ -70,7 +70,7 @@ def _build_ui(self):
             command=self._load_images, 
             relief="flat",
             bg="#e6e6e6",
-            fg="#222",
+            fg="black",
             cursor="hand2",
             width=3
         )
@@ -143,7 +143,7 @@ def h_lbl(text, col):
                 f = tk.Frame(self.tbl_head, bg="#e0e0e0", height=24, bd=0, highlightthickness=1, highlightbackground="#f0f0f0")
                 f.pack_propagate(False)
                 f.grid(row=0, column=col, sticky="nsew", padx=0, pady=0)
-                tk.Label(f, text=text, bg="#e0e0e0", font=("Segoe UI", 9, "bold")).pack(expand=True)
+                tk.Label(f, text=text, bg="#e0e0e0", fg="black", font=("Segoe UI", 9, "bold")).pack(expand=True)
 
             h_lbl("Original", 0)
             h_lbl("Preprocessed", 1)
diff --git a/app/panels/right_sidebar.py b/app/panels/right_sidebar.py
index cddb20f..9534e30 100644
--- a/app/panels/right_sidebar.py
+++ b/app/panels/right_sidebar.py
@@ -27,7 +27,7 @@ def _build_ui(self):
             self,
             text="Settings",
             bg="#f4f4f4",
-            fg="#222",
+            fg="black",
             font=("Segoe UI", 14, "bold")
         )
         title.pack(anchor="w", padx=16, pady=(16, 8))
@@ -96,7 +96,7 @@ def _preprocess_section(self):
             self,
             text="Preprocess Parameters Customization",
             bg="#f4f4f4",
-            fg="#444",
+            fg="black",
             font=("Segoe UI", 11, "bold")
         )
         lbl.pack(anchor="w", padx=16, pady=(8, 4))
@@ -108,7 +108,7 @@ def _toggle_prep():
         
         cbtn = tk.Checkbutton(
             self, text="Customize", variable=self.preprocess_custom_var,
-            bg="#f4f4f4", command=_toggle_prep
+            bg="#f4f4f4", command=_toggle_prep, fg="black"
         )
         cbtn.pack(anchor="w", padx=16)
 
@@ -132,7 +132,7 @@ def _detect_section(self):
             self,
             text="Mold Detection Parameters Customization",
             bg="#f4f4f4",
-            fg="#444",
+            fg="black",
             font=("Segoe UI", 11, "bold")
         )
         lbl.pack(anchor="w", padx=16, pady=(8, 4))
@@ -150,7 +150,7 @@ def _toggle_det():
 
         cbtn = tk.Checkbutton(
             self, text="Customize", variable=self.detect_custom_var,
-            bg="#f4f4f4", command=_toggle_det
+            bg="#f4f4f4", command=_toggle_det, fg = "black"
         )
         cbtn.pack(anchor="w", padx=16)
 
@@ -182,7 +182,7 @@ def _dropdown(self, label, var, values):
         frame = tk.Frame(self, bg="#f4f4f4")
         frame.pack(fill="x", padx=16, pady=4)
 
-        tk.Label(frame, text=label, bg="#f4f4f4").pack(anchor="w")
+        tk.Label(frame, text=label, bg="#f4f4f4", fg="black").pack(anchor="w")
         cb = ttk.Combobox(
             frame,
             textvariable=var,
@@ -196,7 +196,7 @@ def _slider(self, label, var, minv, maxv, step=1):
         frame = tk.Frame(self, bg="#f4f4f4")
         frame.pack(fill="x", padx=16, pady=4)
 
-        tk.Label(frame, text=label, bg="#f4f4f4").pack(anchor="w")
+        tk.Label(frame, text=label, bg="#f4f4f4", fg="black").pack(anchor="w")
         sc = tk.Scale(
             frame,
             from_=minv,
@@ -205,7 +205,8 @@ def _slider(self, label, var, minv, maxv, step=1):
             orient="horizontal",
             variable=var,
             bg="#f4f4f4",
-            highlightthickness=0
+            highlightthickness=0,
+            fg="black"
         )
         sc.pack(fill="x")
         return sc
@@ -221,6 +222,7 @@ def _row_buttons(self, *buttons):
                 command=cmd,
                 relief="flat",
                 bg="#e6e6e6",
+                fg="black",
                 cursor="hand2"
             ).pack(side="left", expand=True, fill="x", padx=2)