When Morpheus is telling Neo about the matrix and then he offers him the pills, you see Neo in the reflection of Morpheus's glasses. In one side you can see that Neo's right arm is reaching for the pill, but in the other lens you can see that his arm isn't reaching for anything.
That's actually because in his left lens you can see his other hand holding the blue pill only. Neo isn't going for the blue pill, so of course you won't see his hand. How is this a slip-up?
Also, in morphius's sunglasses reflection, you can clearly see that there is a large gap between his hands, but when they switch to a farther back view, his hands are almost touching each other.