Hi Jim,
I have tested this issue. The pictureBox shows the gradient background when the control''s backcolor is set to transparent.
Please refer to the sample attached below.
In that sample, I have added a new pictureBox along with the already existing pictureBox in the Wizard Header. I have set BackColor of both the pictureBoxes to transparent.
Let me know if I have missed something.
Thanks,
Mano
Forum_WizardControl_3633.zip