copy paste color property as a new driver

for the float array subtype, I should be able to copy-as-new-driver and paste driver.

Without this feature there is a tedious/laborious workflow, as follows.

After creating the new custom property (Subtype Gamma-Corrected Color):

One can only copy the Data Path, but not as a New Driver:

Then comes the arduous process of Add-Driver, Show In Drivers Editor

often without focus on the field, so one must display all and hunt it down. And now for the many steps per R,G,B,A field:

This is an tedious, unproductive way to spend an hour (including testing to verify that all color indices were edited properly.