I've searched far and wide for this and, as I've got limited memory of it, I've no idea how to find the actual name of the film.
The premise of the film was of a scientist that was forced to retire from his job and, upon doing so, stole two insect-like creatures (aliens) that he kept in his personal shed outside his home.
As time went by, the creatures grew in size and one was blue, whilst the other was red. They gradually got bigger and multiplied, whilst gaining in intelligence and ended up building a "shrine" in sand to depict the scientist's face (i.e he was their God/creator).
After this, inevitably, everything goes wrong and the red and blue aliens end up having a war.
Anyone have an idea what this film is actually called?! I've run out of options other than asking here!