Answer:
A slow, solemn square-dance of warriors feinting. One by one they fall, warriors fainting, thirty-two on sixty-four.
Once they sailed the sea, now they surf the web
My first keeps time, my second spends time, my whole tells time.
What has roots as nobody sees, is taller than trees. Up, up it goes, and yet never grows?
When liquid splashes me, none seeps through. When I am moved a lot, liquid I spew. When I am hit, color I change. And color, I come in quite a range. What I cover is very complex, and I am very easy to flex.
What flies without wings?