Gradient Overlay

The following settings are shown on the vertical sliders when the effect is selected in the Layer FX panel:

Opacity / Offset X—controls the transparency of the effect or defines the start and end stops of the gradient for the X (horizontal) axis.
Scale X / Offset Y—defines the spread of the gradient separately for the X (horizontal) axis or defines the start and end stops of the gradient for the Y (vertical) axis.
Scale Y / Angle—defines the spread of the gradient separately for the Y (vertical) axis or defines the direction of the light source, shadow or gradient.

The following settings are shown on the context toolbar when the effect is selected in the Layer FX panel:

Blend mode—changes how the effect interacts with content below the current layer.
Type—determines the gradient type used. Choose from Linear, Elliptical, or Radial.
Color—sets the color of the effect; global colors can be used. Tap the color box to choose the color from the pop-up panel.