Creating Custom Windows Forms in C# using Panels
Pritam Zope, 5 Mar 2017
In this article we will customize basic windows forms using only Panels in diffrerent colors in Visual Studio using C#

https://www.codeproject.com/Articles/1068043/Creating-Custom-Windows-Forms-in-Csharp-using-Pane

Custom Rendering for the ToolStrip, MenuStrip, and StatusStrip controls

bcryner, 20 Sep 2008
Custom rendering for the ToolStrip, MenuStrip, and StatusStrip controls

https://www.codeproject.com/Articles/29497/Custom-Rendering-for-the-ToolStrip-MenuStrip-and-S

Custom VisualStudio 2008-style MenuStrip and ToolStrip Renderer in C#
Brian C Hart, 2 Apr 2010
An adaptation of Nick Thissen's article on VBForums translated to C# and bottled up into a Class Library you can just drop into your projects.

https://www.codeproject.com/Articles/70204/Custom-VisualStudio-2008-style-MenuStrip-and-ToolS

http://www.c-sharpcorner.com/uploadfile/mahesh/menustrip-in-C-Sharp/

Office ToolStrip 

Phil. Wright, 6 Dec 2006

https://www.codeproject.com/Articles/16666/Office-ToolStrip-Renderer

ToolStrip/StatusStrip

MBToolStrip/MBStatusStrip is a ToolStrip/StatusStrip which inherits all the properties of simple ToolStrip and StatusStrip control

Manoj K Bhoir, 9 Mar 2012

https://www.codeproject.com/Tips/342834/MBToolStrip-and-StatusStrip