The link of the one you showed would likely blur a bit over time. It would also depend on if the person 'digs' really deep with your tattoo or not. A deeper tattoo (or an artist who 'digs') will put the ink deeper, but it will blur, or scar moreso than most. A lighter and more delicately placed tattoo will hold it's lines better, and need to be touched up after several years. If that ankle tattoo you listed were to be mine, I would make it a bit bigger and not quite so 'crowded'. It should stay fairly clear, though :-)

And it's not offensive at all to go to a tattoo parlor and get their professional opinion about color. I would recommend, if there's any close to you, hitting up a tattoo convention so that you can ask multiple people their opinion. Because then you get answers from more than one source.