chore: archive update-candle-colors change

openspec/changes/archive/2026-02-12-update-candle-colors/design.md

@@ -27,7 +27,7 @@ The lightweight-charts library configures candlestick colors through the `addCan
 
 ### Decision 1: Color Values
 - **Up candles**: `upColor: '#ffffff'`, `borderUpColor: '#000000'`, `wickUpColor: '#000000'`, `borderVisible: true`
-- **Down candles**: `downColor: '#000000'`, `wickDownColor: '#000000'`
+- **Down candles**: `downColor: '#000000'`, , `borderDownColor: '#000000'`, `wickDownColor: '#000000'`
 
 **Rationale**: Pure white (`#ffffff`) and pure black (`#000000`) provide maximum contrast and match traditional financial charting conventions. Borders must be visible for up candles to show the black outline.
 

src/components/CandleChart.tsx

@@ -141,6 +141,7 @@ const CandleChart = forwardRef<CandleChartHandle, CandleChartProps>(
         wickUpColor: '#000000',
         wickDownColor: '#000000',
         borderUpColor: '#000000',
+        borderDownColor: '#000000',
       });
 
       chartRef.current = chart;