Checking root health of small Phalaenopsis

[AEKass]

Hi All:

I'm hoping to get some feedback about what I think is a small Phalaenopsis. As some background, I've had this plant for a number of years, and gotten help for its care on here before. Recently I moved from Chicago to Silicon Valley, CA (it's been about 2.5 months). After this orchid dropped its last flower I clipped the stem and re-potted it in a larger plastic container that has drainage holes with Phalaenopsis Monterey Dark Imperial Orchid Mix by rePotme.

It's in a west facing window. Most of its roots are above the medium. I'd noticed lately that it seemed to be drying out more often so I increased how often I've been watering. The plant has always had smaller leaves, but several older ones seem to be dying. It is, however, growing a new leaf. I have a humidity gauge, and it has been consistently in the proper range.

The plant has new roots, but some of the older ones are dead. None are mushy, but I was a bit concerned about the color. Is this brown-ish color normal for old, dead roots? Hoping to get either reassurance that the plant is fine, or advice on improving its health.