Where can I find tack for racehorses?

Hi! Ok I am looking for a horse racing hood in custom colors. My horse likes to look around a lot when we are riding and try to find things to spook at. I've tried everything to keep him focused and haven't had any real sucess , so I figure if a hood with the blinkers works with TB's why not an appy. I'm always one that's up to trying anything so I'm gonna try this. But I can't find any websites anywhere. I have contacted all of my vendors I buy horse tack form here at work and they don't have anyhting either.. I have found only one place and it's called horse hoods but their website is kinda of a pain to try and figure out... any ideas on other sites or where to get one?