Strange colour in thunar

[Henk Boom]

Hi, I've installed the Murrina-LemonGraphite theme[1], but now when I
drag the mouse button in thunar (version 0.8.0) the selection
rectangle is filled with bright purple instead of the light yellow I
would have expected:
http://lunarcrisis.pooq.com/files/thunar-purple.png

I would have expected thunar to automatically calculate the colour to
use there, and indeed when I look in the gtkrc file included in the
theme I can find no purples mentioned anywhere.

Any ideas?

    Henk Boom

[1] Got it from http://art.gnome.org/themes/gtk2/1347