I have been trying t figure out how to change the font color of the player of the weeks, but I am having no success. 

The default seems to be blue, but I want to change the color.

this css should help

div.playeroftheweek-name p a {
color: #005580 !important;
font-size: 14px  !important;
font-weight: bold  !important;
}

div.text p.stat-value {
color: #005580 !important;
font-size: 18px !important;
font-weight: bold !important;
letter-spacing: -2px !important;
margin-bottom: 0.55em !important;
}

modify as required and place in your Admin > Layout section wrapped in some inline style tags. the !important part just ensures that it takes priority over other css