## 1. Update Candlestick Color Configuration

- [x] 1.1 Update the `addCandlestickSeries` configuration in `src/components/CandleChart.tsx` to set `upColor: '#ffffff'` for bullish candles
- [x] 1.2 Set `borderUpColor: '#000000'` to add black outline to bullish candles
- [x] 1.3 Set `wickUpColor: '#000000'` to make bullish wicks black
- [x] 1.4 Set `borderVisible: true` to enable borders for candlesticks
- [x] 1.5 Set `downColor: '#000000'` for bearish candles to make them solid black
- [x] 1.6 Set `wickDownColor: '#000000'` to make bearish wicks black

## 2. Verification

- [x] 2.1 Test the chart with sample data to verify bullish candles display with white interior and black outline
- [x] 2.2 Verify bearish candles display as completely black
- [x] 2.3 Confirm chart remains readable and visually clear with the new color scheme
