If you're having trouble with colors, make sure your hex value uses a #, that there is a space between the = and the hex value, and that all of the letters in your hex value are lowercase.
Syntax
{{Country
|themecolor =
|textcolor =
|bordercolor =
|infoboxbackground =
|title =
|image =
|caption =
|motto =
|anthem =
|population =
|capital =
|largest =
|languages =
|demonym =
|system =
|legislature =
|leaders =
|govagencies =
|land =
|sea =
|coords =
|organisations =
|founded =
|existence =
|status =
|currency =
|religions =
|ethnic =
|gdp =
|gdppc =
|hdi
|timezone =
|driving =
|calling =
|tld =
}}