Color variation picker, Anchor precedence, ph colorzen,ph link colorvariation, server side color iq

* Precedence: colorzen on body < rowcontainer < row < placeholder <
anchor color on body <  rowcontainer < row < placeholder < buttons
colorzen
* nxs_stringstartsWith -> small case W (w)
* Its now possible to derive css classname for darker version of cssname
(d=>dd, m=>d etc.)
* Renamed site_bg_color to site_colorzen