A mood board is how the fifth screen matches the first

Generating a palette is easy. Generating a palette that stays readable at every pairing is the actual work. SketchMason reads a mood board for that work, then writes tokens bound to roles rather than a list of pretty swatches.

What the board is for

Up to six reference images per project. They steer palette, density and type personality. They are never copied into the design itself. Your sketch still decides the layout.

Roles, not colours

Surface, border, focus ring, destructive, muted text. A component asks for the role. Swap the values behind the roles and every screen follows. That indirection is what lets a flow survive a change of theme.

Contrast is a constraint

Body text needs a contrast ratio of at least 4.5 to 1 on the surface it sits on. Large text can go to 3 to 1. A generated guide that fails a pairing is a generated guide we can catch before anyone builds on it.

Where the taste goes

Warm rather than cool, dense rather than airy, serif rather than grotesque: that is still a designer's job. The constraints exist so the judgement is the only thing left to make. Drop the board in and generate the style guide first, then the screen.