def colormap(temp):
    if temp <0.0:
        return 'blanc'
    elif 0.0 <= temp < 5.0:
        return 'violeta'
    elif 5.0 <= temp < 10.0:
        return 'blaufosc'
    elif 10.0 <= temp < 15.0:
        return 'blauclar'
    else:
        return 'verd'