The new ADOX RA4 kit contains everything you need to develop colour paper: Developer and Bleachfix.
Innovative Monoconcentrates. You simply dilute each bath with water 1+4 and get going.

Today all papers are RA-4 compatible.
The content is enough to process 5 sqm of paper (=100 sheets of 8×10).
Partial mixings are possible but once opened the remaining concentrate shall be used within 2 months.
The working solution keeps up for one month in well closed and entirely filled bottles.
The developer must be used at 35°C (+/- 0,3 °C). The bleachfix is more forgiving.
Print-Kit instructions German/English.
 
Note: The part-A chemical can sometimes form crystal if stored in low temperature (below 10c). Suggestion to place the bottle near low heat (perhaps near heater vent) for a while to dissolve the crystals before use.