Don't override default bg/fg colours (fixes #3)

main.py

@@ -47,7 +47,7 @@ def index():
             unquote(request.cookies.get('linenos', ''))) or ''
         divstyles = request.form.get(
             'divstyles', unquote(request.cookies.get('divstyles', '')))
-        divstyles = update_styles(style, divstyles)
+        divstyles = divstyles or get_default_style()
 
         html = hilite_me(code, lexer, {}, style, linenos, divstyles)
         response = make_response(render_template('index.html', **locals()))
@@ -83,7 +83,7 @@ def convert(item):
 
     style = request.values.get('style', '')
     linenos = request.values.get('linenos', '')
-    divstyles = update_styles(style, request.form.get('divstyles', ''))
+    divstyles = request.form.get('divstyles', get_default_style())
 
     html = hilite_me(code, lexer, options, style, linenos, divstyles)
     response = make_response(html)

tools.py

@@ -38,19 +38,8 @@ def hilite_me(code, lexer, options, style, linenos, divstyles):
     html = "<!-- HTML generated using hilite.me -->" + html
     return html
 
-def update_styles(style, divstyles):
-    common_styles = 'border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;'
-    bw_styles = 'color:black;background:white;' + common_styles
-    wb_styles = 'color:white;background:black;' + common_styles
-    if not divstyles: divstyles = bw_styles
-
-    if style in ('fruity', 'native'):
-        if divstyles == bw_styles:
-            divstyles = wb_styles
-    else:
-        if divstyles == wb_styles:
-            divstyles = bw_styles
-    return divstyles
+def get_default_style():
+    return 'border:solid gray;border-width:.1em .1em .1em .8em;padding:.2em .6em;'
 
 def insert_line_numbers(html):
     match = re.search('(<pre[^>]*>)(.*)(</pre>)', html, re.DOTALL)