Sweet Ears just don't look right!

[IngieBee]

Soon after I got my O. Sweet Ears, the bulbs turned dark, and the leaves got dark stripes/brush strokes. I thought it was too much light, and it might still be. However none of my other plants look like this, some are also oncidiums. So could my Orchid be sick with something? I twisted off an old bulb and cut it to check for fusarium but there is no sign of that. Is this just a case of suntan? I mean the bulbs are almost black, but firm. I know they are wrinkled, I don't think they get quite enough water with the semi hydro. But they're definitely not rotten

I did put it in semi hydro leca beads when I got it. It's been in this pot since March. It came in bud, finished blooming and has 2 new growths all which can be seen in the following pictures. I hope I captured it well enough. Thanks for any insight and help

Oncidium Sweet Ears by ingiebee, on Flickr
Oncidium Sweet Ears by ingiebee, on Flickr
Oncidium Sweet Ears by ingiebee, on Flickr
Oncidium Sweet Ears by ingiebee, on Flickr
Oncidium Sweet Ears by ingiebee, on Flickr