But I don't think colonizing it would be a good idea. You can mine for resources without colonizing. And when you're doing that, Jupiter has more of the resources, but less corrosion, so it would be cheaper (unless the altitude maintenance costs as much or more than the corrosion maintenance) with a greater return. It might be easier to get the resources off of Venus though. But for colonization, you'd need some other planet, at least for now. Hmm actually, I thought Venus was mostly SO2 and CO2, not just CO2, this might be easier than I thought. Things we would need to do: eliminate the acids in the atmosphere, pull the sulfur out of the atmosphere, pull 70-80% of the carbon out of the atmosphere, and pull about 60% of the oxygen out of the atmosphere (this is the end of the easy stuff), get the core rotating (we need a stronger magnetic field, see below for ideas), add a freaking ton of hydrogen and a freaking ton of nitrogen to the atmosphere, use the hydrogen and oxygen we removed from the atmosphere to make water, add some rarer minerals (phosphorous, potassium, magnesium, etc.) assuming they aren't a part of the planet's surface, and begin the process of building a topsoil layer (use bacteria, then fungi, then plants). The bacteria/fungi/plants will pull the remaining 20-10% of the carbon we need to remove from the atmosphere. Then we can FINALLY start colonizing it.
Mars tasks (assuming mass of planet not an issue): get it's core rotating as above (launch an asteroid into it? Or Phobos/Deimos?), begin planting life to begin pulling carbon out of atmosphere, add a ton of nitrogen to the atmosphere, add a bunch (not a ton....) of hydrogen to the atmosphere, make water (though not nearly as much), bring temperature up, begin topsoil construction as above (though note: it got a jump-start from the life planted early on).
So yes, Venus is possible, but Mars would be easier.