does anyone know if this combination is available in fabric?

yes they make it in a velvet. I sell schumacher and would be happy to get you a quote. you can contact me at nick@shopdfo.com or at 1-855-336-8848

What you call this kind of pattern?

Would

Is this the Imperial Trellis
Citrine color? It's more green than the yellow in this bathroom pic.

Also available through Walnut Wallpaper in LA

Can I order this in a custom yellow (as in this pic)? I ordered the citrine and it wasn't yellow.

I love this wallpaper, but you're saying it does come in this yellow?

Email us for details.. Imperial Trellis is available in wallpaper and fabric as follows--

fabric2643760 - Parchment / Midnight
fabric2643761 - Natural / Coffee
fabric2643762 - Citrine / Ivory
fabric2643763 - Treillage / Ivory
wallcovering2707210 - Sable Gloss
wallcovering2707211 - Alabaster
wallcovering2707212 - Treillage
wallcovering2707213 - Citrine
wallcovering2707214 - Cinnabar Gloss
wallcovering2707215 - Onyx Gloss
wallcovering5003360 - Raspberry
wallcovering5003361 - Charcoal
wallcovering5003362 - Silver
wallcovering5003363 - Soft Aqua

how many yards in a single roll?

Width - 27"
Horizontal Repeat - 6.75"
Vertical Repeat - 14"
Priced by the single roll, 4.5 yards/roll.
Packaged and sold by the double roll.
Country of Finish - United States of America