using manifest problem

[BigAbility]

i use manifest file in order to make XpStyle Button

but i have to change font color of the button but i doesn't work when i use
manifest file.

To make Xp Style button Button's FlatStyle change to System

that time Font Color is always black

if button.ForeColor = Color.Red; it doesn't work

i have to make XpStyle button and change Font Color using manifest file

how can i solve this problem?