Date

This may not be the 'correct' way of doing something, but you can place your xfce4 color scheme in the following folder:

/usr/share/xfce4/terminal/colorschemes

Look at the existing files for inspiration and add a [Scheme] and Name= line to the top.

I successfully renamed terminalrc.jellybeans to jellybeans.theme with the above modifications and... Presto!

Link to Jellybeans theme