I did some decoration again

I tried to make it less empty in the air and spontaneously grew an obsession with clouds. It's still monochromatic, but I tried pulsing a different colour with the music. Baby steps?
I also tried making custom blocks like @realgravity suggested in my last thread and failed horribly enough for me to refuse to show a picture.

Here's a video to show the pulses, though:

I think this is far better than my last attempt at decoration. Better colours and air decoration, while still keeping the block design I liked from the first.
This actually took far less time, too. My last attempt took about five days to make while I made this in only three.