Change Excel Color Pallet in .NET/C#

[leo2180]

Hi, I'm trying to figure out a way to change the default color pallet in Excel but in C#/.NET.

I can do this is VB like this: ActiveWorkbook.Colors(17) = RGB(61, 61, 61), which basically changes the 17th color in the pallet to that unique RGB value (61,61,61). I can't find though how to do the equivalent in C#.

Can anyone help or point me to a solution?

Thanks!