color improvements

reporting/md_color.py

@@ -149,7 +149,7 @@ inline_match={
     'code_special':  {'re':re.compile(r'([`]+[^`]+[`]+)([!>])'),
                         'bc':'${c}\\1${g}\\2','dc':'${m}\\1${r}\\2'}, # `code`! or `code`> for markslider
     'link':          {'re':re.compile(r'(\[)([^\]]+)(\])(\([^\)]+\))'),
-                        'bc':'${b}\\1${Z}\\2${b}\\3${U}\\4',
+                        'bc':'${B}\\1${Z}\\2${B}\\3${U}\\4',
                         'dc':'${b}\\1${Z}\\2${b}\\3${U}\\4'}, # [text](link)
     'image':         {'re':re.compile(r'(!\[[^\]]+\]\([^\)]+\))'),
                         'bc':'${r}\\1','dc':'${g}\\1'}, # ![text](image)