crossbreed horses?

I recently had a horse DQ for not being breed standard color (and that's true, which is why I have him as a crossbreed - and I've not had the issue before in other shows with him) but still want to check that I have his info listed correctly:
https://drive.google.com/file/d/1jjS91IMoiGRvN92YX0HtQzfDJvPoTOh5/v...sp=sharing

Maybe just a case of the judge missing it?

Should I double down on my reference and make him a img/card to upload?
(though, I also had a ref img card ignored for a unique, yet register-able color, too so not sure that would help :/ )

Or do I just chalk it up to an 'oh well, you win some, you lose some' and forget it / not need to do anything?