oncidium pseudobulb shrivel

[Buds!]

Hi epl,
From my short experience as an Orchid Addict, I will have to agree with the Maestro- Ray.
I have a large pot of Bealleara Marfitch 'Howards Dream', it too developed bronzing on the bulbs and a slight pleating on the leaves. I moved it to a more shady spot, it seemed to rectify the problem.
The other issue with 'pleating' leaves could be related to low humidity- I read that some where (probably Ray's website!).
Regards,
Buds!

[epl]

ok i figured out how to post pictures now(i cant belive it was there right on the top of this forum, duh)so here they are in case it will help or change descisions. Also i decided to keep it in the sphag as i tend to under water(before i had it in a bark/sponge rock/charcoal mixture that was very course.)

[quiltergal]

Looks like it's a combination of not enough water getting to the plant from under watering, and a bad case of sunburn. Some of those smaller leaves look scorched to me, and a few of the larger ones look bleached out. Try moving to a shadier spot, and bumping up the water a little but not too much with sphag.