Analogue Pictures Sonic Logo

Idents are hugely important - as they set the tone of what comes after them. In this case it meant that the studio could choose between different tints of their identity.

Cinematic in scope it wanted to keep the audience on their toes...maybe both idents could start the same and then change halfway through to add a layer of suspense and surprise.

Larger studios do this all the time - adapting their logo to make it feel part of the film about to begin - especially if that film has a strong aesthetic. The earliest example I could find in the research was 'The Mouse That Roared', directed by Jack Arnold back in 1959.