So one day I was just showing what a deoxys looks like to a sibling on blocked and I found that it had a primary red coloration with a secondary color of blue. This is the same colors as Latias (red) and Latios (blue). This does not found my theory, for it isn't really that much evidence. However, when I looked at the shinys of all three, Deoxys is Gold and Teal while Latias is Gold and Latios is Teal. You can check out the pages at s e r e b i i, but it's blocked, so you will have to do it yourself! At http://www.s e r e b i i.net/pokedex-xy/386.shtml (deoxys)
http://www.s e r e b i i.net/pokedex-xy/381.shtml (latios)
http://www.s e r e b i i.net/pokedex-xy/380.shtml (latias)
Obviously remove the spaces.
What do you think of it?