TTMSFNCSearchEdit dropdown button color/style

Hi,

Working on using the TTMSFNCSearchEdit, but would like to style the dropdown button shown in the attached screenshot.
I need to style with white backgroupd and flat, AppyToStyle works selecting it at design time, but at runtime the button is again silver grey and not flat, so I'm guessing there is something I don't see, but what ?

image

Set AdaptToStyle in the formcreate at runtime. Alternatively use TMSFNCSearchEdit1.Edit.Button to access the button and style it programmatically