At summer YAWP, Julie said, "Poems declare something and make it so." (If you know Julie, you can imagine her stabbing the air with her finger, short hair bobbing, a grin on her face.) I venture that we do the same in all writing.
Yes, we all have our times of quibbling and quabbling:
"it was something like a shade of blue..."
"he saw what appeared to be Antoine's shadow"
around, about, somewhat, slightly, quite, rather...
Sometimes we need these words for style, voice, tone. For intentional ambiguity.
But if not? Declare it so! It was blue, it was Antoine's freakin' shadow, and it was awesome.