When the light makes the leaf too hot, the leaf can burn. If you have air-conditioning or the window is open to allow good air movement, you probably won't have a problem. The lighter leaves just mean that it is getting good light. Just feel the leaves now and then when the orchid is getting direct light to make certain they aren't too warm. My phals do get direct light, both indoors and out (just in the mornings, the rest of the day their spot is shady), and they seem to enjoy it.
I would take the orchid out of the pot and take a look at the roots. One of the most common problems with box-store phals is that the box store employees have not been trained in caring for orchids and so they accidentally over-water the orchids and then the roots begin to rot.
In nature, phals cling to trees, bare root, in humid, rain-forest-type conditions. They are watered and then a gentle breeze dries the roots but the humidity keeps them healthy. The purpose of the medium, then, is to keep the air around the roots humid, not to keep the roots wet. Everyone's conditions are a little different so you may end up selecting a new type of medium that is easier for you.
Good luck!
---------- Post added at 03:30 PM ---------- Previous post was at 03:30 PM ----------
By the way, your orchid looks healthy right now, from what I can see of it.