Question

Blueprint paper can be made by soaking paper in a brown solution of Fe(CN)6^3- and iron (III) ammonium citrate. Wherever the paper is exposed to bright light, the paper turns blue. Explain why this happens.

Answer 1

I don't know how much detail you want but here is a fairly good explanation of what goes
on in the process.
https://en.wikipedia.org/wiki/Blueprint

Answer 2

Blue goes green so brown +Yellow equals 6-7 degree 6 so i wanna know is your car insurance good because your gonna have a bad time. damn daniel