Here are a couple underwater self portraits of me and a buddy fishing to try to prove a point. A guy I know swears that the fish don’t care if you tie your lure direct to brightly colored braid. I, on the other hand, always run at least 10 feet of mono (or better yet, fluorocarbon) leader material between my lure and mainline when using braid.
Take a look at the following two pix and come to your own conclusions…we begin with yellow braid tied directly to the hook.

Is that a laser beam??
In this shot, I switched to mono. Seems like a lot more fish around. Just saying…
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Hey, the great yellow line from the sky went away and the fish came back!