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that must be CSS problem. please try to put this css rules:
.ui-datepicker-month, .ui-datepicker-year {
color: red !important;
}
FYI: I can't access your site "Server not found".
Please check your credentianl information. If you don't know how to put this CSS code, please have a look at your template manager. If no any custom css there. you need provide me Administrator & FTP access detail. I will do it for you.