(Putting it in the correct subcategory this time…)
Here is the relevant part from my ~/.config/xfce4/terminal/terminalrc
I am lacking the knowhow how to make it into an actual theme file, unfortunately.
For xfce4-terminal just replace everything below the fontname entry with this:
ColorPalette=rgb(56,60,74);rgb(202,78,108);rgb(82,178,112);rgb(246,139,62);rgb(82,148,226);rgb(137,92,130);rgb(78,197,202);rgb(124,129,140);rgb(85,98,112);rgb(254,159,159);rgb(138,203,158);rgb(213,214,90);rgb(146,187,237);rgb(173,133,167);rgb(137,217,220);rgb(238,232,213)
ColorForeground=#eeeee8e8d5d5
ColorBackground=#1b1b1c1c2222
ColorCursor=#93a1a1
ColorBold=#848585
ColorBoldUseDefault=FALSE
TabActivityColor=#dc322f