Alright I don't know about you but I'm sick of looking at Spontaneous lol so I have some Baby Blue comparisons for you n_n
As you can see they are all extremely similar, baby blue hued with gold shimmer. From top to bottom we have Misa's Radiant, OPI's Baby Blue and OPI's Beverly Hills Chills.
I'm pretty sure Radiant isn't hard to come across (talking e-tailors here), I think it's part of their bright collection, not too sure on that. I don't know if you'd ever come across Beverly Hills Chills or Baby Blue. Someone on MUA has hit the jackpot with Baby Blue though, I think they found about 11 or something :D
Ok, three coats of each colour. First photo is in the sun... actually all of them are :) Just different angles to show you the shimmah!
Last pic is a very close side by side comparison. I think I prefer Misa's Radiant out of the whole lot :/ The one that took the least amount of trouble to get lol