why are there so many songs about rainbow and wats on the other side.. the rainbow connection by kermit the frog *ribbit*

we'll never know wat's on the other side of life if we don't try it.. we'll nv know.. but God knows.
The evening sun was so orangy today outside my office window.. round and subtle, as if waving to me.. lol. rainbows have nothing to hide.. i wanna see a rainbow God. and i know You will give it to me. cos You did so for Joy. :) but even if u don't.. i won't doubt You. nor will i test You. cos You've given me everything i've needed including my deepest romantic wishes.... there's nothing more i need.. nothing more Lord.. the rest.. i'm waiting for You to surprise me. take me on this exciting journey with You.. :) ups and downs.. we're in for it together.. cos You said You'll never leave me nor forsake me.. and You promised to hold my hand. only You Lord.. will keep ur promises i know.. cos man don't but You are so ever unchanging. Thank you. Thank you for dying on the cross.. for loving us 1st.