Rainbow and Headache skins:

Puzzle grid is visible again
Skyscrapers have illumination texture
Added some aurora above the track
Grey block look like they did before May update
Removed some extra rails below the track
Some touch-ups to skysphere

Scoreboard now shows your chain length and number of greys hit all the time

Every grey-hit now makes a crashing sound.
You can see how many greys you could've hit more.Or how many you have hit too much.
Blocks are now collectible even after you have hit max. number of greys. You just don't get any points from them.

Workaround for the bug where, if loop/corkscrew trigger begins the track it doesn't behave.
Max. allowed greys is now dependent on how many there are in the track.

Old Twisted Neon is renamed Loopy Neon
New Twisted Neon skin
Rainbow headache is now twisty instead of, well what it was

Colored blocks and greys can't go to the same spot anymore (Although there is now either two colored blocks or two greys)
One loop now goes downhill and the other uphill (Both went uphill before)