It's a little difficult to find a good title for this... =/
dconf, I was able to edit the "gtk-color-scheme" in
org -> gnome -> desktop -> interface. Using this, I was able to edit the parameters for the theme in a way that suited me. Here they are, for reference:
I copied over my Radiance theme from
/usr/share/themes and copied it to my
~/.themes directory, and edited the "gtkrc" file. However, the colors did not change properly. How exactly can I edit my "gtkrc" file properly?