No way, unless we flood it. Colonize implies a sustain and grow mode. Tardigrades tossed into a vacuum would dessicate and dry because they did not have the time needed to form their survival state. Tardigrades gradually immersed in a vacuum (days) would have time to shut down all processes and dry out. In the dried out state in a vacuum they would survive for a while ? They resist heat and UV to a degree. How long?
<a href="https://en.wikipedia.org/wiki/Tardigrade" rel="nofollow">https://en.wikipedia.org/wiki/Tardigrade</a>