Grey values indicates that this is a default value.
Magenta Value
Magenta values indicates that this value is a tracked value from the main executor.
Those are values from a previous cue, which are not stored in the actual cue.
Red Value
Red values indicates that this value comes from the programmer.
Red Background
Red background color indicates that this value is in the programmer and you can store this values.
This is an active programmer value.
Bright Yellow Value
Bright yellow values indicates that this value comes from a normal executor.
Dark Yellow Value
Dark yellow values indicates that this value is a tracked value from a normal executor.
3.2. What is the Programmer