Archangel Metatron, I ask that you give me clarity on things that I can't see, words I can't speak and thoughts that I need to see that this time. And so it is.
If we need clarity for any reason, Archangel Metatron is the one to call. His colors are represented by what you see in this graphic, very pale and usually what you'd see in the facet of a diamond.
Any Angel of course will help you with your needs but yes, there are specific Angels with specific duties. Metatron is a HUGE Angel both in presence, size and personality.
It's little notes such as this one where you know which Angel to call for clarity and connecting with these colors that will strengthen your connection to the Angelic Realm.