No surprise I am "Lab fan" too, so I'll offer my .02
IMHO, everything you have offered here about labs is as wrong... as your last sentence is right. I can't remember when I've heard such absurd generalizations..relating color to character or ability. I don't care how many "California dogs" you have helped to train, you have misread the breed if you're really serious about your statements.
There are no AKC/UKC recognized Red or Silver labs, I don't know what you guys are speaking about when you say "competition"...but, if you're talking field trials of any sort, then blacks more often are at the top. Yellows follow, then Chocolates. It has nothing to do with color, and everything to do with the fact that blacks and yellows have been more selectively bred and trained in the past than Chocolates, although that is fast changing.
Some observations of mine about labs: Don't expect your Lab puppy to fully settle down and mature until he/she is about 3 yrs. old.
Females tend to train a little easier than males of the breed.
Most males want to be around you all of the time, while females are more apt to just check on you once in a while (this excludes puppies).
A bored Lab puppy WILL chew and be destructive... period!
And finally, when your Lab "passes on".. he/she will leave a hole in your heart that will not heal for many years.
But, I'm just a big dumb Lab lover!