What a thought provoking post and what a book recommendation. Happy Money has been on my list for a while and you have just moved it to the top.

The blue money and red money system you described is genuinely fascinating to me from a mindset and coaching perspective. What you have essentially done is create a physical psychological anchor for different categories of intention around money. The colour distinction forces a conscious decision every time — am I spending this with presence and gratitude or am I investing this toward a future vision? Most people move money around without either of those two states of awareness. You built a system that makes both unavoidable.

To answer your question — if I could design another currency it would be what I would call Time Tokens. Non transferable, non storable, issued fresh each morning in equal amounts to every human being on the planet regardless of wealth, status, or circumstance. The only currency where a billionaire and a student genuinely start each day with exactly the same balance. You cannot save them, inherit them, or steal them. You can only spend them — and every morning the question becomes the same for everyone. What is this worth spending today on? That currency would change everything about how human beings relate to each other and to their own lives.