Off topic on colours I know but this link shows in one image how the excited electrons dropping from higher into lower energy orbital states release radiation to make up the various parts of the spectrum for hydrogen. Mind the maths though - which Im no longer game to try and figure out!
Its quite interesting really to see how you get the various bands.
http://hyperphysics.phy-astr.gsu.edu/hbase/hyde.html
Cheers
David