diff --git a/httpie/client.py b/httpie/client.py
index c0f7a50d..8c4f89d5 100644
--- a/httpie/client.py
+++ b/httpie/client.py
@@ -19,8 +19,6 @@ from httpie.utils import repr_dict
 try:
     # noinspection PyPackageRequirements
     import urllib3
-
-
     # <https://urllib3.readthedocs.io/en/latest/security.html>
     urllib3.disable_warnings()
 except (ImportError, AttributeError):
@@ -128,10 +126,10 @@ def get_response(
 
     with max_headers(args.max_headers):
         if not args.session and not args.session_read_only:
-            kwargs = make_requests_kwargs(args)
+            requests_kwargs = make_requests_kwargs(args)
             if args.debug:
-                dump_request(kwargs)
-            response = requests_session.request(**kwargs)
+                dump_request(requests_kwargs)
+            response = requests_session.request(**requests_kwargs)
         else:
             response = sessions.get_response(
                 requests_session=requests_session,
diff --git a/httpie/output/formatters/colors.py b/httpie/output/formatters/colors.py
index cf4c8e26..9416dea5 100644
--- a/httpie/output/formatters/colors.py
+++ b/httpie/output/formatters/colors.py
@@ -1,14 +1,16 @@
 from __future__ import absolute_import
+
 import json
-from typing import Type
+from typing import Optional, Type
 
 import pygments.lexer
-import pygments.token
-import pygments.styles
 import pygments.lexers
 import pygments.style
+import pygments.styles
+import pygments.token
 from pygments.formatters.terminal import TerminalFormatter
 from pygments.formatters.terminal256 import Terminal256Formatter
+from pygments.lexer import Lexer
 from pygments.lexers.special import TextLexer
 from pygments.lexers.text import HttpLexer as PygmentsHttpLexer
 from pygments.util import ClassNotFound
@@ -26,7 +28,6 @@ if is_windows:
     # great and fruity seems to give the best result there.
     DEFAULT_STYLE = 'fruity'
 
-
 AVAILABLE_STYLES = set(pygments.styles.get_all_styles())
 AVAILABLE_STYLES.add(SOLARIZED_STYLE)
 AVAILABLE_STYLES.add(AUTO_STYLE)
@@ -90,7 +91,7 @@ class ColorFormatter(FormatterPlugin):
     def get_lexer_for_body(
         self, mime: str,
         body: str
-    ) -> Type[pygments.lexer.Lexer]:
+    ) -> Optional[Type[Lexer]]:
         return get_lexer(
             mime=mime,
             explicit_json=self.explicit_json,
@@ -109,8 +110,7 @@ def get_lexer(
     mime: str,
     explicit_json=False,
     body=''
-) -> Type[pygments.lexer.Lexer]:
-
+) -> Optional[Type[Lexer]]:
     # Build candidate mime type and lexer names.
     mime_types, lexer_names = [mime], []
     type_, subtype = mime.split('/', 1)