Where are you seeing that? On my installation there are no names/labels shown for each color like there is in 9.5. If you hover over a color it will show the name but that’s the same as in 10.0.0.
My apologies. You will see it soon. 
Ahhh, a time traveler.
Good to know.
Just released (20190417) is v10.0.20. Here is the description of color-related changes from the release notes:
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Color handling additions
Cubase 10.0.15 re-introduced the Color tool. Cubase 10.0.20adds some more additions to Color Handling.
The previous Set up Colors… button in the Colorize pop-up has been moved to menu Project > Project Colors Setup…
In the Color Set tab you can manage your color set more easily:
Use the cog wheel icon to insert, duplicate, remove and reset specific colors.
When you insert a color in-between two other colors, the newly created color is a blend of these two and not plain white.
In the Presets tab you can easily expand the default color set of 16 colors to 24 or 32. You can also automatically add varying tints on the fly,without ever being forced to setup color shades on your own with a color picker. You can then decide how the colors should be sorted and use the New Color Set area to preview the result.
Once you have changed the color set the application tries to match the current colors to the new ones, so the coloring in your projects remains intact (as far as possible).
All changes you makein the Project Colors Setup window can now be undone.
The main new additionto the Options tab is the return of a preference to allow selecting colors with visible names. Once active, the Colorizepop-ups change to a menu list, showing colors and names together.
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Pictures and/or video showing these changes and/or demonstrating the color operations in general would be most welcome if anyone can provide (I cannot yet).
Cheers!