We can reverse will/shall to show volition, using 'will in the first persons and 'shall' in the others. The example they used to give for this was a person drowning:
I shall drown and no one will save me. (accident)
I will drown and nop one shall save me. (suicide)
Is this what you were looking for? I haven't heard 'coloured future'.
2 Some where between 'As far as I know' and 'I couldn't care'.
- For Teachers