The pack
postGrade
function postGrade(): Pack<{}>
Post effect grade: a colour grade of the whole frame. Requires post. Params, all identity by default:
lift, gamma and gain (each [r, g, b], or one number for all three; defaults 0, 1 and 1), saturation
(default 1), contrast (default 1), temperature (-1 cool to 1 warm, default 0), tint (a CSS colour, default
white) and tintAmount (0..1, default 0).


