Need help! Dying phalaenopsis orchid!

[Diannem06]

I am fairly new orchid mom but I do know the basics. My plant recently started blooming about a month ago and has suddenly stopped half way through the bloom (has 4 buds, only 2 opened and 1 kind of did and just stopped). Now this morning when I went to water it (yes I waited until it was fairly dry) one leaf appears to be dying and the rest seem very weak and flimsy. Leaves are darker then my other plants and slightly purple. I read that the cause of that is that it needs more sunlight. They are outside on my porch with 2 other orchids and seems to get plenty of sunlight (not direct, but other plants are doing fine). Could this be because of the flower color to be the reason why the leaves are slightly purple? I have a Blue Diamond orchid and those leaves are tinted blue so I thought maybe the flower color had something to do with it. What can I do to help keep my plant alive?! Will take pictures if needed.