Choose the method in which the Lower Color, Middle Color (optional) and Upper Color are applied to the series. 

Solid H color:  Middle or Upper Color will be applied to the entire category if it exceeds the defined value; all other values will be filled with Lower Color.

Solid V color:  Middle and Upper Color will be applied only to the part of the column, area, or line that exceeds the defined values.

Stepped color: each category will be filled with a derivative color that’s determined by the value’s proximity to the Lower, Middle (optional) or Upper Color value. 

Gradient: the color origin points will form a linear gradient across the entire series.