Bottom_Center_Top

Light at top and bottom, deep in middle

Bottom_Top

Get lighter from bottom to top

BottomRight_Center_LeftTop

Light at top left and bottom right, deep in middle center

BottomRight_LeftTop

Get lighter from bottom right to top left

Default

No gradient effect

Left_Center_Right

Deep on right and left, light in center

Left_Right

Get lighter from left to right

LeftBottom_Center_RightTop

Deep at bottom left and top right,  light in middle center

LeftBottom_RightTop

Get lighter from bottom left to top right

LeftTop_BottomRight

Get lighter from top left to bottom right

LeftTop_Center_BottomRight

Deep at top left and bottom right,  light in middle center

Right_Center_Left

Light on right and left, deep in center

Right_Left

Get lighter from right to left

RightTop_Center_LeftBottom

Light at bottom left and top right,  deep in middle center

RightTop_LeftBottom

Get lighter from top right to bottom left

Top_Bottom

Get lighter from top to bottom

Top_Center_Bottom

Deep at top and bottom,  light in middle