Welcome to Orchid Board.
I agree, the colouring is fine. There is a lengthy thread with lots of useful tips for beginner Phal growers. I recommend reading some of it at least:
The Phal abuse ends here.
I assume your Phal came potted as it is now. The media does look old and possibly like it is in too large of pot which could cause root rot. Hard to tell without a full shot of the plant and pot, but it looks like it to me.