Now I have a voice in my head saying "you were sooo stupid to buy this HP calculator"

[debrouxl]

Perhaps the management, but clearly, a significant proportion of (potential) users: color has been the norm for new calculator models (new designs, more precisely) since before the 39gII hit the market.

All of the following calculator models feature a color screen:
* Casio Prizm / fx-CG10/20 (late 2010);
* Nspire CX (spring of 2011) and the degraded, cheaper Nspire CM-C series aimed at China;
* 84+CSE (spring of 2013), whose hardware is inferior to that of the 39gII;
* fx-CP400 (spring of 2013), the color screen has touch functionality;
* Prime (late summer of 2013), color touch screen as well;
* 83PCE / 84+CE (spring of 2015).

Outliers newer than 2010 featuring a monochrome screen include:
* the '2012 39gII, which is new hardware;
* the '2015 82A aimed at the French market. That's only a slight modification of the old monochrome 84+ technology. Technically an improvement over 83-class 76.fr / 82 Stats(.fr) and 83+-class 82+. Yes, TI calculator model names are confusing.
* the '2015 Graph 25-E and 35-E models aimed at the French market. Again, those are slight modifications of old models.