Enhancement to temp display

Hello Mike
I read some post about temp display when are used both.
One more enhancement is to include with options minimum and maximum temperatures to scale termometer and wich type of temperature use ?F or ?C. Also may be used a degraded colored background from blue (cool) to red (hot).
Image shows this idea.
Regards
http://personal.auna.com/xav58806/images/WW.jpg