prompt: default prompt colors to the terminal foreground

src/prompt/base.rs

@@ -8,11 +8,12 @@ use {
     strum::EnumIter,
 };
 
-/// The default color for the prompt, indicator, and right prompt
-pub static DEFAULT_PROMPT_COLOR: Color = Color::Green;
-pub static DEFAULT_PROMPT_MULTILINE_COLOR: nu_ansi_term::Color = nu_ansi_term::Color::LightBlue;
-pub static DEFAULT_INDICATOR_COLOR: Color = Color::Cyan;
-pub static DEFAULT_PROMPT_RIGHT_COLOR: Color = Color::AnsiValue(5);
+/// Terminal-default colors for prompt implementations that do not opt into
+/// explicit styling.
+pub static BASE_PROMPT_COLOR: Color = Color::Reset;
+pub static BASE_PROMPT_MULTILINE_COLOR: nu_ansi_term::Color = nu_ansi_term::Color::Default;
+pub static BASE_INDICATOR_COLOR: Color = Color::Reset;
+pub static BASE_PROMPT_RIGHT_COLOR: Color = Color::Reset;
 
 /// The current success/failure of the history search
 pub enum PromptHistorySearchStatus {
@@ -98,21 +99,21 @@ pub trait Prompt: Send {
         &self,
         history_search: PromptHistorySearch,
     ) -> Cow<'_, str>;
-    /// Get the default prompt color
+    /// Get the base prompt color
     fn get_prompt_color(&self) -> Color {
-        DEFAULT_PROMPT_COLOR
+        BASE_PROMPT_COLOR
     }
-    /// Get the default multiline prompt color
+    /// Get the base multiline prompt color
     fn get_prompt_multiline_color(&self) -> nu_ansi_term::Color {
-        DEFAULT_PROMPT_MULTILINE_COLOR
+        BASE_PROMPT_MULTILINE_COLOR
     }
-    /// Get the default indicator color
+    /// Get the base indicator color
     fn get_indicator_color(&self) -> Color {
-        DEFAULT_INDICATOR_COLOR
+        BASE_INDICATOR_COLOR
     }
-    /// Get the default right prompt color
+    /// Get the base right prompt color
     fn get_prompt_right_color(&self) -> Color {
-        DEFAULT_PROMPT_RIGHT_COLOR
+        BASE_PROMPT_RIGHT_COLOR
     }
 
     /// Whether to render right prompt on the last line

src/prompt/default.rs

@@ -2,6 +2,7 @@ use crate::{Prompt, PromptEditMode, PromptHistorySearch, PromptHistorySearchStat
 
 use {
     chrono::Local,
+    crossterm::style::Color,
     std::{borrow::Cow, env},
 };
 
@@ -10,6 +11,11 @@ pub static DEFAULT_PROMPT_INDICATOR: &str = "〉";
 pub static DEFAULT_VI_INSERT_PROMPT_INDICATOR: &str = ": ";
 pub static DEFAULT_VI_NORMAL_PROMPT_INDICATOR: &str = "〉";
 pub static DEFAULT_MULTILINE_INDICATOR: &str = "::: ";
+/// The default prompt colors
+pub static DEFAULT_PROMPT_COLOR: Color = Color::Green;
+pub static DEFAULT_PROMPT_MULTILINE_COLOR: nu_ansi_term::Color = nu_ansi_term::Color::LightBlue;
+pub static DEFAULT_INDICATOR_COLOR: Color = Color::Cyan;
+pub static DEFAULT_PROMPT_RIGHT_COLOR: Color = Color::AnsiValue(5);
 
 /// Simple [`Prompt`] displaying a configurable left and a right prompt.
 /// For more fine-tuned configuration, implement the [`Prompt`] trait.
@@ -89,6 +95,22 @@ impl Prompt for DefaultPrompt {
             prefix, history_search.term
         ))
     }
+
+    fn get_prompt_color(&self) -> Color {
+        DEFAULT_PROMPT_COLOR
+    }
+
+    fn get_prompt_multiline_color(&self) -> nu_ansi_term::Color {
+        DEFAULT_PROMPT_MULTILINE_COLOR
+    }
+
+    fn get_indicator_color(&self) -> Color {
+        DEFAULT_INDICATOR_COLOR
+    }
+
+    fn get_prompt_right_color(&self) -> Color {
+        DEFAULT_PROMPT_RIGHT_COLOR
+    }
 }
 
 impl Default for DefaultPrompt {