Define the dark theme link color in only one place

src/calibre/constants.py

@@ -55,6 +55,7 @@ win32event = importlib.import_module('win32event') if iswindows else None
 winerror   = importlib.import_module('winerror') if iswindows else None
 win32api   = importlib.import_module('win32api') if iswindows else None
 fcntl      = None if iswindows else importlib.import_module('fcntl')
+dark_link_color = '#2a82da'
 
 _osx_ver = None
 

src/calibre/gui2/palette.py

@@ -5,9 +5,10 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 from PyQt5.Qt import QColor, QPalette, Qt
+from calibre.constants import dark_link_color
 
 
-dark_link_color = QColor(42, 130, 218)
+dark_link_color = QColor(dark_link_color)
 
 
 def dark_palette():

src/calibre/utils/rapydscript.py

@@ -12,7 +12,9 @@ import sys
 from io import BytesIO
 
 from calibre import force_unicode
-from calibre.constants import FAKE_HOST, FAKE_PROTOCOL, __appname__, __version__
+from calibre.constants import (
+    FAKE_HOST, FAKE_PROTOCOL, __appname__, __version__, dark_link_color
+)
 from calibre.ptempfile import TemporaryDirectory
 from calibre.utils.filenames import atomic_rename
 from polyglot.builtins import (
@@ -354,7 +356,8 @@ def compile_viewer():
         js = compile_fast(f.read(), fname).replace(
             '__SPECIAL_TITLE__', special_title, 1).replace(
             '__FAKE_PROTOCOL__', FAKE_PROTOCOL, 1).replace(
-            '__FAKE_HOST__', FAKE_HOST, 1)
+            '__FAKE_HOST__', FAKE_HOST, 1).replace(
+            '__DARK_LINK_COLOR__', dark_link_color, 1)
     base = os.path.join(base, 'resources')
     atomic_write(base, 'viewer.js', js)
     atomic_write(base, 'viewer.html', html)
@@ -379,7 +382,8 @@ def compile_srv():
         js = compile_fast(f.read(), fname, js_version=5).replace(
             '__RENDER_VERSION__', rv, 1).replace(
             '__MATHJAX_VERSION__', mathjax_version, 1).replace(
-            '__CALIBRE_VERSION__', __version__, 1).encode('utf-8')
+            '__CALIBRE_VERSION__', __version__, 1).replace(
+            '__DARK_LINK_COLOR__', dark_link_color, 1).encode('utf-8')
     with lopen(os.path.join(base, 'index.html'), 'rb') as f:
         html = f.read().replace(b'RESET_STYLES', reset, 1).replace(b'ICONS', icons, 1).replace(b'MAIN_JS', js, 1)
 

src/pyj/read_book/globals.pyj

@@ -7,6 +7,8 @@ from encodings import hexlify
 from gettext import gettext as _, register_callback, gettext as gt
 
 _boss = None
+dark_link_color = '__DARK_LINK_COLOR__'
+
 
 def set_boss(b):
     nonlocal _boss
@@ -71,7 +73,7 @@ register_callback(def():
         scheme.name = gt(scheme.name)
     # set the system colors if in dark mode
     if window.matchMedia and window.matchMedia('(prefers-color-scheme: dark)').matches:
-        set_system_colors({'background': '#111', 'foreground': '#ddd', 'link': '#6cb4ee'})
+        set_system_colors({'background': '#111', 'foreground': '#ddd', 'link': dark_link_color})
 )
 
 runtime = {