↑: Indicates active buying, where transactions are executed at Ask 1 or a higher price. It is represented by an "up color".
↓: Indicates active selling, where transactions are executed at Bid 1 or a lower price. It is represented by a "down color".
Users can customize the choice of colors for upward and downward movements, allowing for either a "Red Up/Green Down" or a "Green Up/Red Down" configuration.