bids和asks颜色改成一样

.gitignore

@@ -20,3 +20,4 @@ dist
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+.idea

src/index.js

@@ -504,7 +504,7 @@ export default class StockHeatmap extends React.Component {
         const maxBidAskVol = extractMaxVolume(d);
         // draw buys
         if (marketDepth.buys && marketDepth.buys.length > 0) {
-          let color = d3.color('#7e9099').rgb();
+          let color = d3.color('#1a506d').rgb();
           marketDepth.buys.map(buy => {
             color.opacity = buy.qty / maxBidAskVol;
             this.drawingContext.fillStyle = color.toString();