Over the last few days I've been able to get a start on the base for the trunk hose. The lining and panes aren't my main concern. I have yet to make a pair of trunk hose that fits well enough that I can sit down without choking myself. I swiped the basic crotch pattern from the Don Garzia de Medici trunk hose in Patterns of Fashion. My interpretation can be seen here. The material I'm using is a loose weave, stretchy cotton that I've had knocking around for over a decade(!) now, known colloquially as the "vinegar fabric" due to an unfortunate incident with a bag of forgotten grapes. I originally grabbed it off the shelf more or less at random, but I really like the way it works as a foundation.
I plan to make the panes of the red silk (obviously), lined with the ubiquitous black cotton/linen. the question is what to use as the lining layer beneath the panes. The first thing I found that I had enough of is a somewhat shiny black cotton broadcloth. The black-and-red color scheme seems a little too obvious to me. I made a doublet and pluderhosen a million years ago in red and black and it feels like it's still around, even though is wasn't for me and has never really been worn in public. The Medici hose were done in two different shades of crimson, and that appeals to me a little more. Perhaps a red a couple shades darker than the fire engine color of the silk would look good. I'd have to go shopping, though...