In general, I think people fish too small for big gills. There’s many instances where that’s a warranted approach, esp. in clear water, pressured water bodies, etc. However, bigger baits, esp. plastics tend to keep the smaller fish away, and select for larger fish in the school.
As for colors, red and various hues with white such as pink, glow pink, etc. are a standard. Black gets little attention, and is dynamite. From there it’s chartreuse and on down the list for me. A lot depends on where you fish!
Joel