Blueprint, also blue-print is from 1882, from blue (adj.1) + print (n.). The process uses blue on white, or white on blue. Figurative sense of "detailed plan" is attested from 1926.

Blueprints began as a chemical process that produced blue-lined prints with a strong smell of ammonia, and the “blueprint” became synonymous with the specifications used in manufacturing or construction. A blueprint reveals on a single page the general plan, specific detail, the final objective, and the means of implementation. An "experience blueprint" provides the framework for building the customer engagement/customer experience. The experience blueprint is a physical document that guides the building of an experience. Create a blueprint. Create opportunities.

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Figuratively, process creativity, idea hamster