colorless augment slot clarification

[prack1975]

I understand that a colorless augment crystal can go in any slot but what about the colorless slots?
can any colored crystal go into them? I've read some guides but this point didn't seem clear. thanks in
advance.

[Matuse]

Red Slot = Red Crystal, Colorless Crystal
Yellow Slot = Yellow Crystal, Colorless Crystal
Blue Slot = Blue Crystal, Colorless Crystal
Violet Slot = Blue Crystal, Red Crystal, Colorless Crystal
Green Slot = Blue Crystal, Yellow Crystal, Colorless Crystal
Orange Slot = No, this doesn't exist.
Colorless Slot = Colorless Crystal. That's it.