Don't override "context" colors; use "primary", "secondary", and "tertiary" instead

[bencentra]

Overriding context colors (beyond tweaking shades a bit) can cause confusion, not only to end-users but developers who are used to using default Bootstrap. For example, the Member's theme uses the theme-appropriate pink for the "danger" context, which isn't exactly the same as the normal "red = danger".

Instead, override "primary" only and also provide "secondary" and "tertiary" colors that match the theme. This would mean additional classes for buttons, panels, alerts, and more.