Hi Alana, I'm afraid I'm not familiar with your wardrobe so take my recommendations with a grain of salt. I adore handbags and have a collection, but there's always ONE that gets the most use each season. As already suggested, it's the shape and size that is more important than the color -- the most-used bag is one that is large enough to carry a scarf, cardigan, wallet, sunglasses, etc, etc, without being too large as to overwhelm my 5'0 height. With a conveniently accessible pocket for my cell phone, and straps that are comfortable to wear over the shoulder (do not slip off), lightweight enough that it doesn't kill my back (i.e., no heavy hardware), and structured yet also a bit slouchy to conform comfortably to my body. Those requirements are more important to me than the color, but yes, I tend to opt for a bag of this type in a "go with everything" neutral.
For this past Fall/Winter, it was a black bag with gold accents. For Spring/Summer, it's usually a bright/optic white bag, but this year it's a soft blush pink Coach bag. I'm wearing a LOT of black & white lately, or navy and white, and that blush pink bag adds some color but it also functions almost as if it's a neutral, since the color is subtle.
My second-most used bag this Spring/Summer is an optic white Kate Spade bag which is quite structured, smaller, and more polished/lady like.
When considering bags, hardware is important. If you wear a lot of gold jewelry, go with gold hardware. If silver, silver hardware. If both, pewter or bronze works best.
As for pedicures, I find they last a lot longer than manicures, which I usually chip within days if not hours. Whereas pedicures can last me for weeks and weeks (especially if always wearing open-toed shoes), so it's well worth the time & investment, tar as I'm concerned. I like to have fun with the color on my toes and have in the past done all sorts of crazy colors - from neon green to yellow to dark blue/nearly black to gray to black to turquoise to baby blue to nude to bright white. I tend to stay away from the classics like red, as it just seems too... expected? Especially for someone my age (48). I want to have more fun than that! This season my past two pedicures have been orchid - which is kind of a grown-up version of Barbie pink - and I love it so much I'll probably stick with this color all summer. It goes nicely with the blush bag.
One tip when choosing pedicure colors is to consider whether your skin has blue/red or orange undertones. My skin has blue/red undertones. If I was to do a coral or orange (which are colors that near my face look deathly), I'd look for a shade that has a blue undertone to it. Regardless, I once threw all the rules out and did an orange that was the color of a safety cone. It was fun!
As for other accessories, what about scarves? I find scarves are essentials to my wardrobe as they add so much interest and can transform the same LBD into a totally different outfit and nobody is the wiser. Even in summer, a lightweight scarf can work, especially in air-conditioning. At the moment I am on the hunt to add a few more lightweight scarves myself.
As for shoes, if your feet are fussy, this will be the trickier item to add. Don't settle for anything less than comfort AND versatility and style. Wish I had better suggestions here but I'm struggling in this category myself lately. Though I am finding I am practically living in the lace-up cage heel wedges I purchased at the beginning of spring. They are quite comfortable, especially because I can adjust the laces when my feet swell in the heat.
Hope that helps - and one final note, I just wanted to say that I LOVE your hair! I wish mine would wave like that, by that I mean, predictably wave and not just frizz.
