Change color of clock in XFCE

style "panel-clock-custom"
 { 
fg[NORMAL] = "#FFFFFF" 
fg[PRELIGHT] = "#FFFFFF"
fg[ACTIVE] = "#FFFFFF" 
text[NORMAL] = "#FFFFFF" 
text[PRELIGHT] = "#FFFFFF" 
text[ACTIVE] = "#FFFFFF" 
}
widget "Xfce*Panel*clock*" style "panel-clock-custom"



ADD THIS CODE TO
/usr/share/themes/Adwaita/gtk-2.0/gtkrc 


TIP1: Choose the theme You want to use, for me it is Adwaita.
TIP2: CHOOOSE RGB colors yourself