Does that necessarily imply colonization, though? We might just send robots to mine things. Sure, there's minutes of delay because those pesky little photons can't be whipped into going any faster, but we can automate a lot of it and it's not like the task involves particularly quick reaction times, seeing as the mineral isn't going anywhere.

And with an remote-controlled miner, you don't have to worry about all the extra dead weight of the hairless monkeys and their habitat and food and water and needing to bring them back before their bones rot from too little gravity.