Color matte for Red, Green, Blue, Cyan, Magenta, Yello, Black, White and where there is any color information.
Its a simply gizmo, probably a lot of you has already wrote this expression, but I guess it will be useful for many others. :)
Its mostly for the purpose when you get a 3D render and the compositor needs different mattes for the comp.
With this you have a choise to get 8+1 different mattes for your render.
ObjectID_AndorZ is my second version of this Color matte.
Now you have a fine tuning option for antialiasing in it.
There is a pre and post anitaliasing possibilites which is set for a proper math before the expression and after.
The others are pre and post blur and gamma, which is also good for antialiasing.
You can simply copy and paste the gizmo to your gizmo folder.