You should also change the input and label elements:
Code:
body, input, label {
color: black;
background-color: #ffe6ff;
font-size: larger;
font-family: "Times New Roman", Times, serif;
}
In case it help, you can right-click on an element on a web page and choose "Inspect element" (or something like that). You can then experiment with the CSS directly in the browser and see what CSS already applies to what elements.
As for the "apply (Vorple style) style to the entire page" phrase, I think it's not yet implemented, so you have to add the CSS with a CSS file like you did (which is in my opinion better if what you want is to change the overall appearance of the page, not dynamically change it during play).