yahoo style to show colors for ohlc bars

Author: DanielGoldfarb

src/mplfinance/_styledata/yahoo.py

@@ -2,7 +2,7 @@
          'marketcolors'  : {'candle': {'up': '#00b060', 'down': '#fe3032'},
                             'edge'  : {'up': '#00b060', 'down': '#fe3032'},
                             'wick'  : {'up': '#606060', 'down': '#606060'},
-                            'ohlc'  : {'up': 'k', 'down': 'k'},
+                            'ohlc'  : {'up': '#00b060', 'down': '#fe3032'},
                             'volume': {'up': '#4dc790', 'down': '#fd6b6c'},
                             'vcedge': {'up': '#1f77b4', 'down': '#1f77b4'},
          'vcdopcod'      : True,