What do the different colors of text on the market data line mean?
Übersicht:
The text colors (typically the numbers) in a market data line are used to indicate up and down movement of price and quantity. The different colors and their meanings are:
Background:
Yellow: Indicates no change in size or price.
Green: Indicates an upward movement in size or price.
Orange: (or red) indicates a downward movement in size or price.
Purple: For options, the price displayed in purple indicates the best price is not executing automatically at one or more of the exchanges displayed.
Magenta: For inter-market spread orders, this color indicates the implied price of the order.
Light Blue: Indicates that this was the last price at which the contract traded.