Final answer:
The artwork of colorful umbrellas described is an outdoor installation, transforming space and engaging viewers, distinguishing it from traditional sculptures focused on objects themselves.
Step-by-step explanation:
The type of artwork pictured described as a collection of colorful umbrellas is an installation. Specifically, the artwork described appears to be an outdoor installation that engages with the environment in which it is presented. Notable examples of such work include Christo and Jeanne-Claude's 'The Umbrellas', where blue umbrellas were installed in Japan and yellow ones in California. In contrast to other art forms, installation art often transforms perceptions of space and can encourage interaction or experiential engagement from viewers.
In terms of the examples provided, Wolfgang Paalen's 'Articulated Cloud', a single umbrella made from spongy foam, would represent a more traditional sculpture rather than an installation because it focuses on the object itself rather than the environment and space occupied.