Changes
/* To calculate the luminance value */
'''Red'''
*0% => do not add anything *50% => add 3 *100% => add 6
'''Green'''
*0% => do not add anything *50% => add 9 *100% => add 18
'''Blue'''
*0% => do not add anything *50% => add 1 *100% => add 2
<br>
