Use colors similar to the ones chosen for Windows through the QuickSet Strip: https://docs.google.com/document/d/1choXAocN1z_r1rUi2aeWuTqKIWLSB_1YmxhsIESyucI/edit#
As a first pass, the primary foreground and background colours (as indicated in the low contrast themes above) will be used to create the new low contrast themes. In the future we can enhance these themes with the extra colour options indicated. Additionally, the initial pass at grey on dark will use the existing light grey on dark grey low contrast theme from Infusion.
The adjuster may need to be restyled to fit in the additional options.