LÖVE

Simple. Sideways for smartphones and I guess if you've got your desktop monitor vertical. It doesn't matter, though.

Simple idea, nicely executed - I like the sounds.
One point of improvement though: At the very beginning, I understood what I should be doing, but after my first click the new sequence starts too soon after my own click. This makes it sound like I should be double clicking the same colour, which was very confusing. I think there should be a longer break between my last click and the new sequence. Maybe there could also be a visual cue or something which shows that the game is now playing the next sequence.

You're right, and I've thought that before, myself. There's now a .4 second delay between your turn and the computer's, which makes quite a difference. I don't really want it much higher, because a short delay makes it flow, and feel like you're playing along with the computer. I'm not sure what kind of visual cue would be suitable. An icon or colour change would probably be distracting, since the phase changes are so quick.

In any case, it's mostly a "Look, Love totally runs on Android, guys" type game, so I'm happy with it. Maybe one day high scores and themes and power ups and microtransactions and social media integration, but not today.

Yes, this is much better!

Edit: Highscore is still a mere 13, though.

I just got the name...
Well done *claps*