I want to know how can one actually use a .svg file In a web page?
I'd like to agree with the answer from "code-zoop". Although this technically doesn't answer your question, it might also be a solution: enter the relevant data straight into the HTML. Either directly as an svg element, or by using Raphaël-JS.
From w3c-schools:
SVG is all suported in In Firefox, Internet Explorer 9, Google Chrome, Opera, and Safari you can
(end of quote)
And to think even more outside the box, depending on how you want to use it, you can also put your 1-color graphics in a webfont. (see for example iconmoon.io )