Apply colors only when they are supported

Cargo.toml

@@ -18,6 +18,7 @@ indenter = "0.3.0"
 once_cell = "1.18.0"
 owo-colors = "4.0"
 autocfg = "1.0"
+anstream = "0.6.15"
 
 [profile.dev.package.backtrace]
 opt-level = 3

color-eyre/Cargo.toml

@@ -26,6 +26,7 @@ owo-colors = { workspace = true }
 color-spantrace = { version = "0.3", path = "../color-spantrace", optional = true }
 once_cell = { workspace = true }
 url = { version = "2.1.1", optional = true }
+anstream = { workspace = true }
 
 [dev-dependencies]
 tracing-subscriber = { version = "0.3.0", features = ["env-filter"] }

color-eyre/examples/theme.rs

@@ -1,12 +1,13 @@
-use color_eyre::{config::Theme, eyre::Report, owo_colors::style, Section};
+use color_eyre::{config::Theme, eyre::Report, Section};
+use owo_colors::Style;
 
 /// To experiment with theme values, edit `theme()` below and execute `cargo run --example theme`
 fn theme() -> Theme {
     Theme::dark()
         // ^ use `new` to derive from a blank theme, or `light` to derive from a light theme.
         // Now configure your theme (see the docs for all options):
-        .line_number(style().blue())
-        .help_info_suggestion(style().red())
+        .line_number(Style::new().blue())
+        .help_info_suggestion(Style::new().red())
 }
 
 #[derive(Debug, thiserror::Error)]