Update CHANGELOG

Motivation:

`--color 16` can be a better default than `dark` or `light`, since it uses
the colors defined by the current theme. This usually blends in more
naturally and works well in both light and dark modes.

However, some elements were previously hard-coded with white or black
foreground colors, which can cause rendering issues in certain terminal
themes.

* 16
  * Avoid using black or white foreground colors, so it works better with
    both dark and light themes
  * Display 'info' in italic to better separate it from the other parts
* dark / light
  * Display 'info' in italic for consistency

CHANGELOG.md

@@ -4,6 +4,7 @@ CHANGELOG
 0.66.0
 ------
 - Style changes
+    - Updated `--color base16` (alias: `16`) theme so that it works better with both dark and light themes.
     - Narrowed the gutter column by using the left-half block character (`▌`).
     - Removed background colors from markers.
 - Added `--gutter CHAR` option for customizing the gutter column. Some examples using [box-drawing characters](https://en.wikipedia.org/wiki/Box-drawing_characters):

man/man1/fzf.1

@@ -246,11 +246,11 @@ color mappings. Each entry is separated by a comma and/or whitespaces.
 
 .RS
 .B BASE SCHEME:
-    (default: \fBdark\fR on 256-color terminal, otherwise \fB16\fR; If \fBNO_COLOR\fR is set, \fBbw\fR)
+    (default: \fBdark\fR on 256-color terminal, otherwise \fBbase16\fR; If \fBNO_COLOR\fR is set, \fBbw\fR)
 
-    \fBdark    \fRColor scheme for dark 256-color terminal
+    \fBdark    \fRColor scheme for dark terminal
-    \fBlight   \fRColor scheme for light 256-color terminal
+    \fBlight   \fRColor scheme for light terminal
-    \fB16      \fRColor scheme for 16-color terminal
+    \fBbase16  \fRColor scheme using base 16 colors (alias: \fB16\fR)
     \fBbw      \fRNo colors (equivalent to \fB\-\-no\-color\fR)
 
 .B COLOR NAMES:

src/options.go

@@ -59,7 +59,7 @@ Usage: fzf [options]
 
   GLOBAL STYLE
     --style=PRESET           Apply a style preset [default|minimal|full[:BORDER_STYLE]
-    --color=COLSPEC          Base scheme (dark|light|16|bw) and/or custom colors
+    --color=COLSPEC          Base scheme (dark|light|base16|bw) and/or custom colors
     --no-color               Disable colors
     --no-bold                Do not use bold text
 
@@ -1325,7 +1325,7 @@ func parseTheme(defaultTheme *tui.ColorTheme, str string) (*tui.ColorTheme, erro
 			theme = dupeTheme(tui.Dark256)
 		case "light":
 			theme = dupeTheme(tui.Light256)
-		case "16":
+		case "base16", "16":
 			theme = dupeTheme(tui.Default16)
 		case "bw", "no":
 			theme = tui.NoColorTheme()

src/tui/tui.go

@@ -303,6 +303,14 @@ const (
 	colMagenta
 	colCyan
 	colWhite
+	colGrey
+	colBrightRed
+	colBrightGreen
+	colBrightYellow
+	colBrightBlue
+	colBrightMagenta
+	colBrightCyan
+	colBrightWhite
 )
 
 type FillReturn int
@@ -923,19 +931,19 @@ func init() {
 		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
 		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
 		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:           ColorAttr{colBlack, AttrUndefined},
+		DarkBg:           ColorAttr{colGrey, AttrUndefined},
 		Prompt:           ColorAttr{colBlue, AttrUndefined},
 		Match:            ColorAttr{colGreen, AttrUndefined},
-		Current:          ColorAttr{colYellow, AttrUndefined},
+		Current:          ColorAttr{colBrightWhite, AttrUndefined},
-		CurrentMatch:     ColorAttr{colGreen, AttrUndefined},
+		CurrentMatch:     ColorAttr{colBrightGreen, AttrUndefined},
 		Spinner:          ColorAttr{colGreen, AttrUndefined},
-		Info:             ColorAttr{colWhite, AttrUndefined},
+		Info:             ColorAttr{colYellow, AttrUndefined},
 		Cursor:           ColorAttr{colRed, AttrUndefined},
 		Marker:           ColorAttr{colMagenta, AttrUndefined},
 		Header:           ColorAttr{colCyan, AttrUndefined},
 		Footer:           ColorAttr{colCyan, AttrUndefined},
-		Border:           ColorAttr{colBlack, AttrUndefined},
+		Border:           ColorAttr{colDefault, Dim},
-		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
+		BorderLabel:      ColorAttr{colDefault, AttrUndefined},
 		Ghost:            ColorAttr{colUndefined, Dim},
 		Disabled:         ColorAttr{colUndefined, AttrUndefined},
 		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},