New to Oncidiums - is this leaf blotching normal?

[katsucats]

I have an Oncidium anthrocrene with slight blotching. I also thought it looked suspicious, but it tested negative, at least for CMV and ORSV. It's otherwise healthy looking. Oncidiums seem to just have weird quirks like this. The Sharry Baby looks suspect with weird spotting all over, but it's also negative for viruses. That's something I haven't been able to figure out. I have 3 of its 4 species parents and none of them do this.