YES!!

General:

Timing point could be set at 1469 (Edit > Apply Offset, set to -4) Sources: Audio and Background should be empty as they don't have an original media or artist name, set Cover to Resurge Tags: cafune, resurge are duplicates, best to remove. Add dubstep to tags as well.

colorless:

00:01.043 - i feel the tick notes are that readable with grayscale enabled, a suggestion would be to use the middle mouse button on each of the tick notes to make them smaller.

00:27.069 - For the easy and normal difficulties. I would suggest to refrain or tone down the opacity for the additional playfields out to the side as they can often confuse the player if a note happens to overlap with a column.

00:46.269 - Although this is the easy difficulty. I feel you could easily add a note (just a single note) on the red ticks so that it's a bit more natural to hit the chords back and forth.

Transition to the chorus at 00:55.469 - i feel you can't be able to see the left most chord within a quick timeframe. It's hittable yes, but not the easiest to sightread for easy sv difficulties. I would suggest either removing the black overlay for the easy difficulty or changing SV so that the player knows to hit the left two columns early.

01:31.069 - you could make this and the note next to it on the same column to kind of introduce the jack stuff to the player for the later difficulties. and could give some contrast to the previous patterns

I feel you could easily extend your grayscale / retro so that it doesn't feel sudden when starting to play the chart. (You can do this by setting the starting time of your grayscale / retro to around -3000 or -5000)

I don't think this needs a source applied. Especially not one linking to the soundcloud page.