C# Checked Change the other checkbox (color change, flat appearance checkbox mousedown color)

Only if there is one mousedown color in the flat appearance in the check box. Also, when I put the mouse on the check box, I want to change the mousedown color of the other flat appearance check box.

ex) check box 1, check box 2

Point to checkbox 1 to change the color of checkbox 2.

How do I change the mouse-over color of a check box along with other check box colors?

i use C#

thanks my friends.