feat: simplify theme

src/main.rs

@@ -1,7 +1,7 @@
 use std::{borrow::Cow, env, ffi::OsStr, path::Path};
 
 use iced::{
-    Alignment, Color, Element, Length, Renderer, Subscription, Task, Theme, color, event,
+    Alignment, Color, Element, Length, Renderer, Subscription, Task, Theme, event,
     keyboard::{self, Key, key},
     theme, widget, window,
 };
@@ -213,12 +213,9 @@ fn main() -> Result<(), iced::Error> {
         .theme(Theme::custom(
             "custom",
             theme::Palette {
-                background: color!(0x080808),
+                background: Color::BLACK,
                 text: Color::WHITE,
-                primary: color!(0xff00ff),
-                success: color!(0x00ff00),
-                warning: color!(0x880000),
-                danger: color!(0xff0000),
+                ..theme::Palette::DARK
             },
         ))
         .run()