Best background for photographing engineering parts

I often take photos of components such as circuit boards, mechanical
parts, etc. The parts can be just about any color and are typically
from 1 inch square in size to 12 inches square. For quick setup, I
would like to have a foamcore background to be used for these parts
that presents them the best way for contrast and lighting.

I have been using a bright white foamcore and a royal blue foamcore.
I am wondering if there is a color for general use that is the best
for making the digital cameras I use end up with the best contrast,
lighting and color presentation of these components. The photos are
not for marketing, but for engineering study,

I am looking for the best color balance, contrast and lighting. What
would you suggest?

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