Based on what you wrote and the pics, Im assuming you want a recommendation for a platform or wedge under a long mixed metal skirt, color block, sleeveless top, and metallic or multicolor bag. and, I’m guessing your style is eclectic. and, since the options seem summery. . . And you selected separates, I’m also guessing it’s not full black tie, but more like cocktail/resort where some guests will wear long and short. I could be totally wrong, but here are some suggestions
(BTW, I've had ankle cartilege replacement surgery and used to wear vertiginous heels. No more).
if a resort wedding (even dressy cocktail/ long skirt, then a flat espadrille or flat sandal. If you have a certain type of style like me, a few years back, a vogue editor was photographed in cocktail attire and leather Birkenstock’s (all black, no exposed cork). birkenstock makes an inexpensive matte silver plastic one called EVA birkenstock. birkenstock also does designer collaborations: I’m fond of the all leather Valentino ones. Bergdorfs unusually carries some form of designer collaboration.
I’m also fond of wearing doc martens with everything (even a chanel cocktail dress) but that’s just me.
cole haan- Cole haan used to do a line with Nike. They typically have a wedge sandal and other shoes in their evening or dressy section that are wide in the toe box and not narrow. Comfy.
stuart weitzman. Depending on how fashion forward you are, you may like SW or think the brand is matronly. But. Every year he does a cork Wedge peep toe that is comfortable. One year an SA told me that he does the same one bc there are women who would riot if it wasn’t available. They are more traditionally feminine
arche - I’m not a fan of their color or styles, but they are comfy.
an unconstructed cushioned flat (I’d go nude) all birds, but you could also go designer. valentino does a rockstud pointy toe flat mule that runs large and is extremely comfy. (I say this as someone who doesn’t like the fit of their cage flat
personally, I’m 53, short, and affect an edgy style. I could even imagine wearing a pair of blue black glitter golden goose sneakers (I like the old school converse style) with the right evening ensemble. But, in that case I would constrain my color choices to navy metallic and black.
purse: in a case where I have both silver and gold metallic, I’d pull out a metallic chanel reissue of in between shade.
for A less expensive option, I like looking at Etsy.
HTH
note: I’m a bit afraid of platforms ever since my mom fell and broke Her wrist. She wore platform sneakers.