Dig the song, but the video is only 'meh'. Look at the thread stickied that says "How To Improve Your Videos Overnight".
A color change by itself can be pretty amazing, but a half dozen in rapid succession is just ... 'meh'. There's no context, no presentation, no performance, so there's nothing but "One card changed into another" and that stops being impressive or even noteworthy pretty quickly.
You seem to do the flourishes well, but it also seemed to me that you basically did the same few things over and over. Maybe there's variations in there that the uneducated in flourishing won't catch. I don't know, but I saw the same thing at least three times and then some other stuff tossed in.
There could be some more variety in the moves. You could also space out the color changes so they don't come one right after the other. Having the flourishes and/or color changes match up with bits of the music is a nice touch. Also, why do I not know what you look like after seeing you perform?