Answer:
No matter how little or how much you use me, you change me every month.
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.
In Paris but not in France, the thinnest of its siblings.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams dreamt, my merest touch brings laughter.
What is the difference between love and marriage?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?