My silks are all one colour - like a cerise/maroon colour. Martin has all purple silks and another trainer has all black silks - they show up as black with grey sleeves but they are all black, for what ever reason the game wont show all black.
All dark blue is taken by Leon. I think all yellow is taken.
All green might be available - I think Thunderspark has all gold.
Check out these classic races that were run over the weekend and have a look at the colours that have been used and taken by existing trainers.
Here is the link
https://www.youtube.com/watch?v=bYxH66r ... Fs6b8czN4yHere is a link to one of the races that has Martin's silks with his horse Russian Foxbat and my horse King Achiever with my all cerise silks.
https://www.youtube.com/watch?v=hol5LrK ... 4y&index=4