I am designing a splash screen with 6 colours andto provide asmooth transition fromthe splash screen to the window form, I wish to use the system api to change to one of the 19window colours. Anyone can tell me how to change the window system colours using api and c#without manually right click desktop select appearance ?

Any advise assistance welcome

You really shouldn't change the system colors (which affect all applications with a GUI) just to make your application look pretty.