I think you are over thinking it. I've never associated the color of the trim as being feminine or masculine and have always had white. Lots of rooms have dark furniture with white trim, (all of mine do) as well. If you do a search on Houzz.com you'll see lots of examples;www.BHG.com has lots of examples as well.

Exactly what lukkiirish said. Personally, I would view the furniture (wood tone, style, upholstery), window coverings (what if any fabric used, etc), accessories, artwork, paint color, and accessories much more impactful in making a space feel masculine. I wouldn't worry at all about white trim (crown or other).

What they said, but after that ascertain if the trim, etc. would look more manly painted black, or if you're so inclined, plan it that way... oh, and the door, of course ;-)

You might want to consider a portable electric power seat that can be used on any chair, then you can move it to a dining room chair etc. I have a link below but I'd check Craigslist and Ebay for one were it me.

Here is a link that might be useful: portable power lift

My upstairs area was made more "Manly" for DH. I have white trim downstairs. He wanted a more "cabin in the woods" feel.

However, "his room" has lighter trim. It's not white, but a brown/cream shade.

And believe me, there is nothing anyone would think is "feminine" about that room!

You could paint the walls and moulding all in the same shade of, say, a soft gray, or a bit darker gray below chair rail. ( or green or tan, etc) Works especially well where walls are wainscoted. A very classic look.

My DH loves his office.

You guys have provided some great suggestions! I will make some attempts at trying to get this last room put together and send some pics for viewing. Again, I appreciate the input. :)