glow aura around name help

Can someone help me with glow colors? i dont know how to do it. I wnt red, blue, yellow, black, white, and purple, how do i get these colors?

Are you wanting those as colors for separate people or all one person. As if it's for one person you can only make their name glow so many colors

Code:

a[href="/u1"]{ 
    text-decoration: none !important;
    text-shadow: 0 0 0.2em white, 0 0 0.2em white, 0 0 0.2em white;
    }

That's the code to make names have a shadow/glow. You just change the "u1" to whatever user and then the colors to whatever color.

https://help.forumotion.com/t96136-group-s-style-on-legend-glitter-icon-glow
Here.

i forgot to mention i dont want to give them admin powers. i apologize for that, i dont know other ways except to give them admin powers

Sorry to burst in, but is there any way to use a color code instead of just the word of the color, like FFFFFF instead of white ?
Is there also a way to change how strong the shadow looks?

Code:

a[href="/u1"] {
text-shadow:0px 5px 19px #000000;
}

Mess around with the px