There are some inconsistencies with the current (and old) ThemeRoller

[ltdeta]

Modify url not working correctly with background textures
If you configure a theme and select a different type for the textures, e.g. "highlight_soft", the theme is created correctly.
However, if you then use the URL from one of the CSS files, all textures are set to "flat" again

"bgTexture[Type]" are loaded allways with the default value "flat"

example custom theme
Theme-Custom-Url-With-bg.txt


Quality of iconsets not identical
The iconsets (2024) are not identical to the ThemeRoller version jQuery 11.4. Some icons are much blurrier
I have attached the icon sets of both versions
jquery-ui-1.12.1-iconsets.zip
jquery-ui-1.11.4-iconsets.zip

jQuery UI 11.4

jQuery UI 12.x / 13.x
the differences can be seen very clearly in lines 1,2, 7 and 8

[mgol]

Thanks for the report. Since the issue is already in 1.12, given limited team resources it's not likely to be fixed by the UI team; see the project status at https://blog.jqueryui.com/2021/10/jquery-maintainers-update-and-transition-jquery-ui-as-part-of-overall-modernization-efforts/. PRs are welcome if they're not too complex.