Color way off

[quixotic]

Hi All,

I'm using version 4 with Windows 7, and I'm finding that no matter what color I try to use, the result is much lighter on the canvas than it's supposed to be. On the attached image, the red arrow shows the intended brownish-red (down in the lower right corner) and the resulting creamy pink on the canvas.

Any idea as to what I'm doing wrong?

Thanks in advance.