There's a device called "Spike-It Color-C-Lector" that can help select the right color.  It goes for $100 at Bass pro shops.  I bought one on ebay for $60 but haven't received it yet.  I've seen a lot of anglers use it on TV and they say they love it but they are probably sponsored. 

bass pro shops  ad

i personally wouldn't buy one of those, i just can't put out money like that for something that gives me a guesstimation, i can guess for free.....but on the same hand i'm not a professional fisherman either so what do i know.......i just tend to fish dark, opaque (black, junebug)colors when the water is really stained or dirty......and try to fish colors that are a little more natural (pumpkin, green pumpkin, watermelon seed) in clear water....and for stained water try naturals with a little chartruese ......pumpkin /chart is a great combo and usually a go to bait for me......also take into consideration the forage in the water you are fishing, type of cover (sparse cover= natural/ dense= attention grabber to draw them out), and barometric pressure (for some reason bass favor blue color variations on low pressure days) and sky brightness (bright sky= more translucent colors.......dark sky= opaque)

this is a very simple guide line.......it also just depends on your home waters.....the fish there could just like black all day, every day....who knows........good luck

D H followed me up pretty well........the fish will respond to the lure itsself not necissarily  the color......kevin vandam just did a segment on the bass pros a few weeks ago and he said that how the fish strike certain lures can tell you.....if they are just swiping at a crankbait and you are only catching them by the rear treble keep using that style lure but tweak the color until the fish begin to engulf the whole lure

D H followed me up pretty well........the fish will respond to the lure itsself not necissarily  the color......kevin vandam just did a segment on the bass pros a few weeks ago and he said that how the fish strike certain lures can tell you.....if they are just swiping at a crankbait and you are only catching them by the rear treble keep using that style lure but tweak the color until the fish begin to engulf the whole lure

what the ?????? ummm sorry about three posts??