API Frame GetBackdropColor

s provide two methods to determine the tint applied to their : red, green, blue, alpha = frame:SetBackdropColor red, green, blue, alpha = frame:SetBackdropBorderColor
 * GetBackdropColor returns the tint applied to the background component of a frame's backdrop
 * GetBackdropBorderColor returns the tint applied to the border component of a frame's backdrop

Returns

 * red : Number - Remaining proportion of the original red colour, from 0 to 1
 * green : Number - Remaining proportion of the original green colour, from 0 to 1
 * blue : Number - Remaining proportion of the original blue colour, from 0 to 1
 * alpha : Number - Remaining proportion of the original opaqueness, from 0 to 1