If an Ionic app is built with the default theme, that is, without touching its theming code (scss); and it is being viewed on (say) an Android platform in the default ‘md’, ‘Light’ mode. Then…
The UI will contain the 9 colors (primary, secondary, tertiary, and so on), AND shades of gray applied to some elements and controls.
I understand that I can customize those 9 colors (primary, secondary, tertiary, and so on), by changing the values of the variables in the file varialbles.scss. But I don’t understand from where the gray shades in the UI are being defined, and how I can customize or override those gray colors as per my requirements.