Keren Orah on the power of the Techelet colour

And in the Yerushalmi (Berakhot 1:2) it states “and the ocean’s blue is similar to grass, and grass to the sky, and the sky to the heavenly chariot.”  The intent is that this color (of techelet) brings a person to contemplation on God’s dominion in the entire world.  Through looking at the earth, including the grass, and the ocean, which is part of the water, and the sky – and will see that they all have one appearance, that they are all the overflowing of the heavenly chair of God, then this seeing will bring to a remembering, so that the fear of God is always in front of his eyes, and that God is the true God in the heavens above and the land below, there is no other.

-Keren Orah (Menachot 43b)

http://www.the-daf.com/talmud-conceptual/menachot-43b-tzitzit-sin-mitzvot-and-identity/