orange tongue sufferers

I also have had orange tongue problem for 3 weeks.  I have used straight hydrogen peroxide, baking soda, all of which when I brush with it, the coating goes away and I have a moist pink tongue.  However, shortly after eating or drinking anything, I get a dry feeling and before too long my tongue is orange.  I am not on beta carotene, no change in meds, I have always brushed my tongue twice daily...my dentist doesn't know what it is and I have a call out to my doc.  It is strange cuz I feel completely normal and have no other skin discolorations.  I'll stay posted to see if anyone else has an answer, peroxide and baking soda do help to get it off though.