Options Greeks
What is Color and how does it measure the rate of change of Gamma relative to the passage of time?
By Easy Money Scanner · Educational reference · Not investment advice
The short answer
Color measures the rate of change of an option's gamma over the passage of time, describing how gamma itself shifts as expiration approaches, holding the stock price constant.
How it works
Color becomes most relevant near expiration for at-the-money options, since gamma increases sharply as time runs out, and color tracks how fast that increase is occurring daily.
An example
As an ATM XYZ option nears its final trading days, its gamma rises each day purely from time passing, and color quantifies that daily rate of gamma change.
Risk & limitations
Like other higher-order Greeks, color is primarily used by institutional risk management desks and offers limited actionable value for most individual retail option traders.
Examples are hypothetical, not trade recommendations. US contract and regulatory references do not automatically apply in Canada. Rules, margin requirements and broker policies can change; confirm them with the relevant authority and your broker.