Rainbow Public School, Mysuru, is celebrating its annual ‘Open Day’ under the title “Rainbow Spectrum” tomorrow (Dec. 7) between 9 am and 12.30 pm in the School premises at M.K. Hally, Mysuru. The theme of the event is ‘One State Many Worlds’ — Karnataka. All the students have prepared the exhibits by themselves in the school for display, according to a press release from the Secretary of Rainbow Public School [Mob:98808-59501].