$getC = new getcolors;
$hex   = $getC->hex('Blue','100');
// return : string '#BBDEFB'

$getC = new getcolors;
$rand = $getC->rand(3);

/*return : array (size=3)
0 => string '#BA68C8' (length=7)
1 => string '#FFF176' (length=7)
2 => string '#64B5F6' (length=7)
*/