normally there is now way for us to stay in clouds.... but because cisco's routers are so strong detecting there is no problem for us, so we can stay or act imaginary in the clouds easily!!!
pictures of a could mostly have smt lightly, so people are positioned working or surfing on a nice cloud symbolizes an easy going behavior without a feeling of fear or danger, because they are using and especially trusting the routers of cisco!
could be also imagine similar visuals with bad weather around, but they are still cool :)
the sky is always colored in the cisco systems blue...
other pictures could be a big amount of data, or several clouds people sitting there and communicate with each other...