Anaemic looking leaves on doritis and phals

[mossmac]

I was just wondering if it is a common thing for Phalaenopsis and Doritis orchids to suffer somewhat when they are posted to you? I have bought three phals (received in the post) and all of them have had 'anaemic' looking leaves for three or four weeks afterwards. Then they seem to green up again and 'recover'. It is almost as if they 'sulk' after being posted.

I am rather worried about my Doritis pulcherrima 'Champorensis' as it is three weeks since I received it in the post and it isn't doing anything at all. The roots look healthy but the leaves are quite yellow looking. No sign yet of them greening up. Not quite sure what to do, really! It is a young plant currently potted in medium bark mix.

Any help/ advice would be greatly appreciated!

Mossmac