function getColorByTemp(temp) {
    if (isNaN(temp)) {
        throw Error('temp must be a Number.');
    }

    if (isNaN(temp) || temp < 0 || temp > 1) {
        throw Error(temp + ' is a invalid temp.');
    }

    var min = 70
        , max = 170
        , maxVariation = 600
        , variation = Math.round(maxVariation * temp);

    if (variation <= 100) {
        return 'rgb(' + min + ',' + (min + variation) + ',' + max + ')';
    }

    if (variation > 100 && variation <= 200) {
        return 'rgb(' + min + ',' + max + ',' + (max - (variation - 100)) + ')';
    }

    if (variation > 200 && variation <= 300) {
        return 'rgb(' + (min + (variation - 200)) + ',' + max + ',' + min + ')';
    }

    if (variation > 300 && variation <= 400) {
        return 'rgb(' + max + ',' + (max - (variation - 300)) + ',' + min + ')';
    }

    if (variation > 400 && variation <= 500) {
        return 'rgb(' + max + ',' + min + ',' + (min + (variation - 400)) + ')';
    }

    if (variation > 500) {
        return 'rgb(' + (max - (variation - 500)) + ',' + min + ',' + max + ')';
    }

    throw Error(':(');
}