diff --git a/Userland/Libraries/LibGUI/OpacitySlider.cpp b/Userland/Libraries/LibGUI/OpacitySlider.cpp
index ed12fdf512..89b1426a4e 100644
--- a/Userland/Libraries/LibGUI/OpacitySlider.cpp
+++ b/Userland/Libraries/LibGUI/OpacitySlider.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2022, the SerenityOS developers.
+ * Copyright (c) 2023, networkException <networkexception@serenityos.social>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -42,7 +43,7 @@ void OpacitySlider::paint_event(PaintEvent& event)
     for (int pos = inner_rect.first_edge_for_orientation(orientation()); pos <= inner_rect.last_edge_for_orientation(orientation()); ++pos) {
         float relative_offset = (float)pos / (float)inner_rect.primary_size_for_orientation(orientation());
         float alpha = relative_offset * 255.0f;
-        Color color { 0, 0, 0, static_cast<u8>(AK::min(alpha, UINT8_MAX)) };
+        Color color = m_base_color.with_alpha(static_cast<u8>(AK::min(alpha, UINT8_MAX)));
         if (orientation() == Gfx::Orientation::Horizontal) {
             painter.fill_rect({ pos, inner_rect.top(), 1, inner_rect.height() }, color);
         } else {
@@ -149,6 +150,12 @@ int OpacitySlider::value_at(Gfx::IntPoint position) const
     return min() + (int)(relative_offset * (float)range);
 }
 
+void OpacitySlider::set_base_color(Gfx::Color base_color)
+{
+    m_base_color = base_color;
+    update();
+}
+
 void OpacitySlider::mousedown_event(MouseEvent& event)
 {
     if (event.button() == MouseButton::Primary) {
diff --git a/Userland/Libraries/LibGUI/OpacitySlider.h b/Userland/Libraries/LibGUI/OpacitySlider.h
index 8876d7be14..f00cd242a8 100644
--- a/Userland/Libraries/LibGUI/OpacitySlider.h
+++ b/Userland/Libraries/LibGUI/OpacitySlider.h
@@ -17,6 +17,9 @@ class OpacitySlider : public AbstractSlider {
 public:
     virtual ~OpacitySlider() override = default;
 
+    void set_base_color(Gfx::Color);
+    Gfx::Color base_color() { return m_base_color; }
+
 protected:
     explicit OpacitySlider(Gfx::Orientation);
 
@@ -29,6 +32,8 @@ protected:
 private:
     Gfx::IntRect frame_inner_rect() const;
 
+    Gfx::Color m_base_color { 0, 0, 0 };
+
     virtual Optional<UISize> calculated_min_size() const override;
     virtual Optional<UISize> calculated_preferred_size() const override;