Hi Neil,
My apologies, I should have been more clear. It seems that the function 'Pin to Taskbar' is not available, when Start10 is set to either the Windows 7 Style or Modern Style, for icons of the 'All Programs/Universal Apps' folder, where the icons are white.
The function, 'Pin to Taskbar' is available from the Start10 menu flyout for the 'Universal apps' where the Icons are black.
If Start10 is set to the 'Windows 10 style', the function 'Pin to Taskbar' is available for the white Universal Apps icons that are now shown in the alphabetical listing. I can then pin these icons to my Taskbar, then go back to my preferred 'Modern Style' menu.
So the problem lies with providing the function 'Pin to Taskbar' for the Universal Apps icons listed in the 'All Programs/Universal Apps' folder when the style is set to either Windows 7 or Modern.
Pinning these lighter icons to my Taskbar works better and some of them, such as the XBox Smartglass icon, have a colored background.
Pete