I think the answer is either a MAGAZINE or a NEWSPAPER.
Thin and colorful may be due to the photos published on the paper. Colors contributed from different text colors and fonts.
Holding the thoughts of yesterday and the hopes of tomorrow may be news and predictions.
The wave of a hand, never destroying. crinkle, crisp, clear. This may refer to when we turn the pages of the magazine we're reading. And the page is initially crisp then as time passes after many uses it becomes crinkled.
S.A Stands for Sine Anno.
Answer: the hawk will eat the snake
Explanation:
