There are 2 types of Agfa print developer, Neutol NE(utral), & WA(rm), and choice of these can be used to control print image colour. The first choice has to be the paper type however, and this decides the general appearance of the print. The developer selected is then fine tuning this.
Neutol WA is particularly suitable for the warmest image colour on chloro-bromides - see listing under Warm Tone Developers. Neutol Plus is a general purpose developer in the range, which uses iso-ascorbic acid rather than hydroquinone as a developing agent - this is normally a brownish colour in the concentrate, which does not indicate exhaustion.