feat: slighlty increase git signs brightness and make them configurable

lua/tokyonight/colors.lua

@@ -44,6 +44,12 @@ function M.setup(config)
   }
   if config.style == "night" or config.style == "day" then colors.bg = "#1a1b26" end
 
+  colors.gitSigns = {
+    add = util.brighten(colors.diff.add, .2),
+    change = util.brighten(colors.diff.change, .2),
+    delete = util.brighten(colors.diff.delete, .2),
+  }
+
   util.bg = colors.bg
   colors.git.ignore = colors.dark3
   colors.black = util.darken(colors.bg, 0.8, "#000000")

lua/tokyonight/theme.lua

@@ -18,9 +18,9 @@ function M.setup(config)
     Comment = { fg = c.comment, style = config.commentStyle }, -- any comment
     ColorColumn = { bg = c.bg_visual }, -- used for the columns set with 'colorcolumn'
     Conceal = { fg = c.fg_gutter }, -- placeholder characters substituted for concealed text (see 'conceallevel')
-    Cursor = { style = "reverse" }, -- character under the cursor
-    lCursor = { style = "reverse" }, -- the character under the cursor when |language-mapping| is used (see 'guicursor')
-    CursorIM = { style = "reverse" }, -- like Cursor, but used when in IME mode |CursorIM|
+    Cursor = { fg = c.bg, bg = c.fg }, -- character under the cursor
+    lCursor = { fg = c.bg, bg = c.fg }, -- the character under the cursor when |language-mapping| is used (see 'guicursor')
+    CursorIM = { fg = c.bg, bg = c.fg }, -- like Cursor, but used when in IME mode |CursorIM|
     CursorColumn = { bg = c.bg_highlight }, -- Screen-column at the cursor, when 'cursorcolumn' is set.
     CursorLine = { bg = c.bg_highlight }, -- Screen-line at the cursor, when 'cursorline' is set.  Low-priority if foreground (ctermfg OR guifg) is not set.
     Directory = { fg = c.blue }, -- directory names (and other special names in listings)
@@ -260,14 +260,14 @@ function M.setup(config)
     NeogitDiffAddHighlight = { fg = c.git.add, bg = c.diff.add },
 
     -- GitGutter
-    GitGutterAdd = { fg = c.diff.add }, -- diff mode: Added line |diff.txt|
-    GitGutterChange = { fg = c.diff.change }, -- diff mode: Changed line |diff.txt|
-    GitGutterDelete = { fg = c.diff.delete }, -- diff mode: Deleted line |diff.txt|
+    GitGutterAdd = { fg = c.gitSigns.add }, -- diff mode: Added line |diff.txt|
+    GitGutterChange = { fg = c.gitSigns.change }, -- diff mode: Changed line |diff.txt|
+    GitGutterDelete = { fg = c.gitSigns.delete }, -- diff mode: Deleted line |diff.txt|
 
     -- GitSigns
-    GitSignsAdd = { fg = c.diff.add }, -- diff mode: Added line |diff.txt|
-    GitSignsChange = { fg = c.diff.change }, -- diff mode: Changed line |diff.txt|
-    GitSignsDelete = { fg = c.diff.delete }, -- diff mode: Deleted line |diff.txt|
+    GitSignsAdd = { fg = c.gitSigns.add }, -- diff mode: Added line |diff.txt|
+    GitSignsChange = { fg = c.gitSigns.change }, -- diff mode: Changed line |diff.txt|
+    GitSignsDelete = { fg = c.gitSigns.delete }, -- diff mode: Deleted line |diff.txt|
 
     -- Telescope
     TelescopeBorder = { fg = c.border_highlight },

lua/tokyonight/util.lua

@@ -1,3 +1,5 @@
+local hsluv = require("tokyonight.hsluv")
+
 local util = {}
 
 util.colorsUsed = {}
@@ -35,13 +37,22 @@ end
 function util.darken(hex, amount, bg) return util.blend(hex, bg or util.bg, math.abs(amount)) end
 function util.lighten(hex, amount, fg) return util.blend(hex, fg or util.fg, math.abs(amount)) end
 
+function util.brighten(color, percentage)
+  local hsl = hsluv.hex_to_hsluv(color)
+  local larpSpace = 100 - hsl[3]
+  if percentage < 0 then larpSpace = hsl[3] end
+  hsl[3] = hsl[3] + larpSpace * percentage
+  return hsluv.hsluv_to_hex(hsl)
+end
+
 function util.getDayColor(color)
-  local hsluv = require("tokyonight.hsluv")
   if color ~= "NONE" then
-    local hsl = hsluv.hex_to_hsluv(color)
-    hsl[3] = 100 - hsl[3]
-    if hsl[3] < 40 then hsl[3] = hsl[3] + (100 - hsl[3]) * .3 end
-    return hsluv.hsluv_to_hex(hsl)
+    if color ~= "NONE" then
+      local hsl = hsluv.hex_to_hsluv(color)
+      hsl[3] = 100 - hsl[3]
+      if hsl[3] < 40 then hsl[3] = hsl[3] + (100 - hsl[3]) * .3 end
+      return hsluv.hsluv_to_hex(hsl)
+    end
   end
   return color
 end