My phaleonopsis orchid, is it healthy?

My phal (moth orchid) seems to be a very healthy plant. The roots all look to be healthy. The leaves are wide, lush, and green. And the new leaf which has grown is nice and lush as well. I'm curious though, because on the back of the leaf, there's a redish tint to it. But this is only on the new leaf that has grown. Any one knows what that signifies?





Also, the flower stem, which has been cut after all flower fell off, is as dry as a tree branch. Seriously, the stem is completely dry, but the plant look live and vibrant. I cut the stem about 2inch or so from the base....at least that's what I was told to do. Any ideas why my spike is dry and dead, but the plant is well alive?

My phaleonopsis orchid, is it healthy?
Most are epiphytic shade plants; a few are lithophytes. In the wild they are typically found below the canopies of moist and humid lowland forests, protected against direct sunlight, but equally in seasonally dry or cool environments. The species have adapted individually to these three habitats.





Phalaenopsis shows a monopodial growth habit. An erect growing rhizome produces from the top one or two alternate, thick and fleshy, elleptical leaves a year. The older, basal leaves drop off at the same rate. The plant retains in this way four to five leaves. If very healthy, they can have up to ten or more leaves. They have no pseudobulbs. The raceme appears from the stem between the leaves. They bloom in their full glory for several weeks. If kept in the home, they usually last two to three months, which is considered quite a long time