Those are true, but I think the OC color ponies happened with people personally related to the staff. I'm not sure if such is the case with the disabled pony, but I remember the black/yellow pegasus in the episode with Lightning Dust was a pony designed by some Hasbro staff's daughter or something like that.
And yah, the bronies in commercial was surprisingly early on actually, I still remember it fondly.
I just have an irk against people saying they gave Hasbro their brand new idea. There is this one particular guy I kinda know that at some point kept saying how he wrote a letter to Hasbro and then claimed one of the new episodes was a slightly altered version of what he suggested to them. I'm pretty sure he just got lucky and/or his vague explanation about a storyline meant he WANTED to believe his story would be used, and that one episode just happened to be close enough for him to make himself believe.
But, yeah. Rantrantrant. Sorry bout that.