epub converter: update

src/util/color_reader.py

@@ -59,6 +59,8 @@ def str2color_name(s: str):
         name = get_hex_colour_name(s)
         return name
 
+    elif s in html4_hex_to_names.items():
+        return s
     else:
         return ''
 

src/util/css_reader.py

@@ -76,8 +76,8 @@ LIVECARTA_STYLE_ATTRS_MAPPING = {
     'font': lambda x: '',
     'font-family': lambda x: LawCartaConfig.font_correspondence_table.get(x.capitalize()),
     'font-size': convert_font_size,
-    'color': str2color_name,
-    'background-color': str2color_name,
+    'color': lambda x: LawCartaConfig.HTML42LIVECARTA_COLORS.get(str2color_name(x), ''),
+    'background-color': lambda x: LawCartaConfig.HTML42LIVECARTA_COLORS.get(str2color_name(x), ''),
 }
 
 LIVECARTA_STYLE_ATTRS_SHOULD_BE_TAG = {