The problem that leads to the misconception is that the bridge doesn't look BIGGER - if the shield generators for example would be empasized then you could be lead to think: Hey, that is weird for a SD - but the bridge (apart from it's coloring) doesn't stand off against the rest of the fleet - until we see that huge shadow - then at last we realise that we see the BIG shark in the pond!

So correcting the color is one thing, and maybe it helps many viewers, but the rest of us would have needed a different type of bridge to establish the "shark fin" approach - am I correct ?