If an object touches a certain color, then perform a certain action?

Question

C++ / C#

Hello!
I decided to make a program in c# (in visual studio).
I am using windows forms.
I just can’t find how to make it so that if some object touches an object that has a black color, perform a certain action?
Thanks in advance)

Answer 1

if (obj.intersects(other) && other.color == Color.black){
...
}