Absolutely yes on burgundy skinnies! I have one plum pair and one in a dark burgundy.
Rae mentioned some of my stylish sisters on YLF -- last week Vicki was wearing printed skinnies and totally pulling it off. I can't really say there are rules except showing a lot of skin (minis, short shorts) is dangerous territory.
It's interesting also to note that where you live plays a part. MaryK, Vicki and I all live in California where I think the eternal mindset is "young" so no one blinks twice at shorts on older women, skinny jeans, trendy wedges, etc.
Another one to watch, although she is younger than I by a decade at least, is Deborah from Austrailia. She has quite a fashion-forward style but always looks lady-like.
Sometimes I experiment with a trend quite a bit and finally discover, it's not for me. I recently had this experience with neon yellow skinnies (I will post a thread about this).