Sunny days its bright or reflective lures that would bounce the sunlight off of them and catch the fishes attention.
Cloudy the UV light from the sun is actually stronger so fluorescent work well because they can almost glow to the fishes eye sometimes triggering a strike, but cloudy can also be considered low light so sometimes "bright" lures that are not fluorescent depending on the colors, the water clarity, and depth might be very hard for the fish to even see (especially reds, yellows, whites)
Strong winds or stormy weather can stir up sediment in the water, in which case, two tone lures with contrast can work well to catch the fishes attention.
Bright lures in night time depending on the depth/clarity can also be very hard for the fish to even see, (Just because its bright to you out of the water doesnt mean the fish see it like that at depth, its the opposite in fact) blues and blacks are the most visible colors at distance under water so they are a good bet in low light. Not bright.
Am I saying you cant catch fish irl not following this stuff, ofc, irl you sometimes throw just about anything and still catch fish, but sometimes no. Again this is a game, and not real life. It has alot of realistic aspects, but its still a game, the devs should not be expected to make it 100% like real life. I dont see anything wrong with it possibly having strategy unique to the game that also fits into what you should do irl.