Not sure which market you're in, since you don't show a location or model year in your signature.
I just pulled a wheel to check mine, stock off a '95 USA model:
Cap Diameter 72.25 mm, measured with a digital caliper. Yours are 2 13/16" = 71.44 mm?
Total height is 21.0 mm, measured with a digital caliper. Yours are 13/16" = 20.64 mm
The lip on the cap is 4.25mm thick. Spline diameter around 69 mm.
Coincidentally, when I was playing around with 3D printing them, I used 73 mm, 21 mm, 4.5 mm lip & 68.5 mm spline dia. Fit perfectly.
How confident are you in your measurements? Did you measure a cap or the rim?
The reason I ask is that Mita seems to show stock:
https://www.mitamotorsports.com/nsx-accessories/1stgen-cap
They list it as fitting any '93-2001 stock rim. Do you know what year your wheels are from?
One of the color options is "Blade Silver", which looks in the picture like brushed aluminum. Is what you'd want?
Or are you looking for a Honda H vs. Acura A? In that case, the "Aluminum Silver" also looks like brushed aluminum.
Not sure I follow the painting option. I don't think any paint will match brushed aluminum.
Hope that helps,