In VB .NET, you can use code regions to group related pieces of code. You can click the + or - sign to the left of a region's start to expand or collapse its code. This makes the code easier to read (you can hide things you are not interested in) and easier to manage (search functions only search code that is expanded so you can restrict your search to relevant code).

The syntax looks like this:

    #Region "Region Name"
        ... code ...
    #End Region

Make the region names descriptive. You can make the End Region statement a bit easier to understand by adding a comment as in:

    #Region "Color Selection Code"
        ... code ...
    #End Region ' Color Selection Code