diff --git a/src/main.rs b/src/main.rs
index 55de9a9..2cf466b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -17,6 +17,8 @@ fn main() {
     }))
     .add_plugins(EguiPlugin::default())
     .add_plugins(WorldInspectorPlugin::new())
+    .init_resource::<resources::UiTheme>()
+    .register_type::<resources::UiTheme>()
     .add_systems(
       Startup,
       (setup, assets::load_assets, widgets::spawn_cutter_machine_ui),
diff --git a/src/resources.rs b/src/resources.rs
index bbadbb1..f7cfa57 100644
--- a/src/resources.rs
+++ b/src/resources.rs
@@ -3,32 +3,31 @@
 use bevy::{color::palettes::css::*, prelude::*};
 
 #[derive(Debug, Reflect, Resource)]
+#[reflect(Resource)]
 pub struct UiTheme {
   // TODO: Panes
 
   // Colors for the "Big Red Buttons" (the main actions of the machines)
   // normal
-  brb_bg: Color,
-  brb_border: Color,
+  pub brb_bg: Color,
+  pub brb_border: Color,
   // hover
-  brb_hover_bg: Color,
-  brb_hover_border: Color,
+  pub brb_hover_bg: Color,
+  pub brb_hover_border: Color,
   // pressed
-  brb_pressed_bg: Color,
-  brb_pressed_border: Color,
-
+  pub brb_pressed_bg: Color,
+  pub brb_pressed_border: Color,
 }
 
 impl FromWorld for UiTheme {
   fn from_world(world: &mut World) -> Self {
     Self {
-        brb_bg: RED.into(),
-        brb_border: DARK_RED.into(),
-        brb_hover_bg: PINK.into(),
-        brb_hover_border: RED.into(),
-        brb_pressed_bg: GREEN.into(),
-        brb_pressed_border: DARK_GREEN.into(),
+      brb_bg: RED.into(),
+      brb_border: DARK_RED.into(),
+      brb_hover_bg: PINK.into(),
+      brb_hover_border: RED.into(),
+      brb_pressed_bg: GREEN.into(),
+      brb_pressed_border: DARK_GREEN.into(),
     }
   }
 }
-
diff --git a/src/widgets.rs b/src/widgets.rs
index d8ff126..fd08390 100644
--- a/src/widgets.rs
+++ b/src/widgets.rs
@@ -6,6 +6,8 @@ use bevy::{
   ui::Val::*,
 };
 
+use crate::resources::UiTheme;
+
 pub fn spawn_cutter_machine_ui(mut commands: Commands) {
   commands
     .spawn((machine_ui_base("Cutting Machine"),))
@@ -131,44 +133,47 @@ fn button_hover_start(
   // Get button background and border colors so we can change them.
   // Filter for *changed* interactions, and only entities with a [`Button`]
   mut button_colors: Query<(&mut BackgroundColor, &mut BorderColor), With<Button>>,
-  // TODO: pull in a theme resource (also: make a theme resource)
+  ui_theme: Res<UiTheme>,
 ) {
   // Get the components for only the Trigger's target entity
   if let Ok((mut bg, mut border)) = button_colors.get_mut(event.target()) {
-    *bg = PINK.into();
-    *border = RED.into();
+    bg.0 = ui_theme.brb_hover_bg;
+    border.0 = ui_theme.brb_hover_border;
   }
 }
 
+// TODO: Consolidate these with the help of a NewType enum and `trigger_map()`
+// see: https://github.com/bevyengine/bevy/issues/14649
+
 fn button_hover_stop(
   event: Trigger<Pointer<Out>>,
   mut button_colors: Query<(&mut BackgroundColor, &mut BorderColor), With<Button>>,
-  // TODO: pull in a theme resource (also: make a theme resource)
+  ui_theme: Res<UiTheme>,
 ) {
   if let Ok((mut bg, mut border)) = button_colors.get_mut(event.target()) {
-    *bg = RED.into();
-    *border = DARK_RED.into();
+    bg.0 = ui_theme.brb_bg;
+    border.0 = ui_theme.brb_border;
   }
 }
 
 fn button_press_start(
   event: Trigger<Pointer<Pressed>>,
   mut button_colors: Query<(&mut BackgroundColor, &mut BorderColor), With<Button>>,
-  // TODO: pull in a theme resource (also: make a theme resource)
+  ui_theme: Res<UiTheme>,
 ) {
   if let Ok((mut bg, mut border)) = button_colors.get_mut(event.target()) {
-    *bg = GREEN.into();
-    *border = DARK_GREEN.into();
+    bg.0 = ui_theme.brb_pressed_bg;
+    border.0 = ui_theme.brb_pressed_border;
   }
 }
 
 fn button_press_stop(
   event: Trigger<Pointer<Released>>,
   mut button_colors: Query<(&mut BackgroundColor, &mut BorderColor), With<Button>>,
-  // TODO: pull in a theme resource (also: make a theme resource)
+  ui_theme: Res<UiTheme>,
 ) {
   if let Ok((mut bg, mut border)) = button_colors.get_mut(event.target()) {
-    *bg = RED.into();
-    *border = DARK_RED.into();
+    bg.0 = ui_theme.brb_bg;
+    border.0 = ui_theme.brb_border;
   }
 }