Convective objects are superimposed over the Meteosat infrared image,
whose colormap is adapted to coldest temperatures :
classical grey
colormap until -40°
, then,
blue shades between -41° and -50°,
green shades to between -51° and -60°,
light-red shades between -61° and -70°
pink shades to between -71° and -80°
violet shades from -80° until -105°
black beyond -105°