You can choose which indicators to represent the size and color both on the market map.
Customize Size of the Market Map
The size of blocks or rectangles typically represents Today's Volume or Market Capitalization. You can change it using the size dropdown on top.
Customize Color of the Market Map
Use the "Color" dropdown to control which data is visualized by color on the market map.
1 Day % Change
1-Week Change
1-Month Change
3-Month Change
6-Month Change
1-Year Change
Index Points
Relative Volume
P/E Ratio
Dividend Yield