Use hexadecimal color values

- [Instructor] As a programmer, you know…that when you have byte information,…one way that you can represent that…is using hexadecimal notation.…It won't surprise you to learn that WPF supports this…for setting the red, green, blue and alpha channels…for the color structure.…I'll start by showing you how to do this in XAML,…and then we'll switch over to C sharp code…and show you how to do the equivalent.…In this example, I have five ellipses on this window.…This first ellipse here, ellipse number one,…has currently got its fill value set to a null value.…This is how you represent a null in XAML.…

What this means is there is no brush assigned…to this property.…Since there's no brush assigned,…when it's time to render this, it'll use…a transparent solid color brush to render those pixels.…To do hexadecimal notation in XAML, you start by putting in…a pound symbol, and then the simplest notation is…to use three digits.…These digits can go from zero to F.…This represents red, the second digit represents green,…and the third one represents blue.…