Dear Dave,
We have the brass color for the D5 pump covering.
Here is the link of BP-WTZM200BS-TBLE. You can choose brass fittings to connect to the D5 top and D5 pump covering as following links. About the standard black fittings, what did you mean?
https://shop.bitspower.com/index.php?route=product/product&product_id=3607&search=BS-TBLE
BP-D5MAV3-AGD
https://shop.bitspower.com/index.php?route=product/product&product_id=7842&search=D5MA
BP-D5TOPACS-BK
https://shop.bitspower.com/index.php?route=product/product&product_id=2717&search=D5TOPACS