GoldBars-X11 Theme
JGD-Gold is an optional theme to go with the GoldBars GTK themes. These themes style selected X11 applications. It includes a customized calculator for xCalc and the xTerm and URxvt terminals. On the download page, look for the jgd-gold or jgd-gold-dark file. Instructions on how to use them are on the jgd-configs parent page.
JGD-Gold/JGD-Gold-Dark at GitHub
Although these are designed to go with the GoldBars GTK theme collection, you can also use them as standalone themes if you wish.
Enjoy.