I am involved in a C# Windows Forms project, where I am making the GUI. It is my first C# and Windows Forms project.
I have created several forms where I want to have a background colour with filling effects. The same is true for the buttons.
What I want is similar to that one can achieve with Microsoft Office applications, like Word, where you can add a drawing to a document over the menu "Insert" > "Graphic..." > "New drawing". You may change the colour of an object by clicking on it, then by clicking the right mouse button and selecting "Format AutoForm...", where the filling effects can be seen on the Color combo box (see the bottom of the colour list).
Thank you for your replies!