Right click on Toolbar 1 tab > Customize toolbar...
at the top left drop down Select > Floating toolbar 14, 15, or 16
at the bottom right > Import (this should take you to REAPER\MenuSets)
you should see
ReaTrak color icons toolbar 14 medium.ReaperMenu
ReaTrak color icons toolbar 15 small.ReaperMenu
ReaTrak color icons toolbar 16.ReaperMenu
select the appropriate number (you can change the toolbar slot by dragging it into Notepad and change the number to another slot.

Code:
[Floating toolbar 16]
title=ReaTrak Toolbar Large
icon_0=ReaTrak-count-in.png
icon_1=ReaTrak-intro-post-fill.png
icon_2=ReaTrak-intro.png
icon_3=ReaTrak-intro-fill.
........
........