There are plenty of custom gui tutorials and 3rd party components, this is another one of those questions that get asked twice a week.
Search, goto tutorials section.
By default WinForms Inherit Windows themes
https://www.mpgh.net/forum/161-tutori...ustom-gui.html
https://www.mpgh.net/forum/33-visual-...form-help.html
https://www.mpgh.net/forum/33-visual-...-3-4-10-a.html
https://www.mpgh.net/forum/33-visual-...als-me-hd.html
https://www.mpgh.net/forum/33-visual-...-prettier.html
Just to prove a point, all of those contain custom gui help or tutorials
/Closed, Please Use search before creating a thread.