Hi :)
In this case, I think it would be the word pair "vivid-drab”
“Vivid” means that colors are bright, luminescent, eye-grabbing.
On the other hand, “drab” colors are dull, lacking in brightness.
I hope this helped! :)
I would say that the decimals equal to 77 is 0.77 as 77 is 77% of 100.
In the letters, a friend is defined to be, "gentle yet courageous, possessed of a cultivated as well as of a capacious mind, whose tastes are like my own, to approve or amend my plans."