The LC Flash Minnow is one of the best plugs ever made (IMHO).
It casts like hell, can take up heavy seas, and works like a jewel, besides it's well made has a tough diving lip (not like the cheap plastic that the DUO plugs have).
As for the specs, they weight 21 grams, have weight transfer system and dive about 60 to 70 cm's in a straight retrieve with the rod tip at waist height.
They are one of the best selling and most killer plugs in Portugal, and I guess in Spain too.
As for colors, the Aurora Black (or Zebra Aurora Black for the saltwater models) and the American Shad (or Zebra American Shad in saltwater models) are imo all terrain colors, use and abuse them in day or night, clear water or stained water, they will work.
They have a lot of colors to choose from, all of them pretty good imo.
Some colors come with black (freshwater) trebles, Owner ST something, they will do well in saltwater, if you wash your lures after fishing they will last almost the same as the saltwater trebles.
As for retrieves, I never work a straight retrieve with most of lures (except vibration plugs), I like to cast it, and retrieve jerk/pause retrive jerk/pause.
Or with a continous twitching (small rod tip twiches) retrieve.
But I NEVER use straight retrieves, the more erratic your lure will work, the best it atracts bass.
As you can see it even catches fish in crystal clear water, at noon, in the middle of hot day of portuguese summer, oh and it catches girls also ehehhe J/K!
Flash Minnow FTW!