I wondered about this kind of situation too (material {} container use).
Seems the new method of "containing" both texture and interior together via 
the material keyword (totally unrelated to material_map) does not allow for 
pattern types to be used. So, interior items are not applicable to any form of 
patterning, only texture items. Ignore the messages about using interior items 
in finish as usual and you can still get there from here.
Just can't make "solid" insides of objects do the same.

Message <3624F6EC.F7CFF06F@skynet.be>, Hendrik Knaepen  typed...
>
>Hi,
>
>With POV-Ray3.02 I could make a color-dependant-refractive-surface using
>a texturemap with different filtered colors and different ior's.  Now
>that the ior has been moved to the interior, this is no longer
>possible.  At least not this way.  Is there another way to do this? And
>I mean directly from POV-Ray, so rendering the image a few times with
>changing refractions and colors is not what I want (it's too slow to do
>on my 486DX2 66 (Yeah, you may laugh, it has only 12Mb Ram! :-) )
>
>ZK
>
>--
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>          Idee Software -- Vlaamse ShareWare
>            E-Mail: ide### [at] inamecom
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-- 
 omniVERSE: beyond the universe
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=Bob

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