The Space-Spirit, at difference of it´s sibling, is more happy-go-lucky and creative spirit that just simple like to enjoy itself. It is depicted with very bright colors, even rainbow patterns, but blues, yellow and purples are the most common used.
As it said on the text the number 4 represent this spirit. Every spirit got its own number and it mean something representative of them and also complementary with their opposite, in this case the Time spirit (12 for the month of the year and the 12 hour found in the clock). For the Space-Spiritis the number 4 is for the cardinal points.