Here we have a much darker green.

But we can go a little further,

we can actually make secondary colors by mixing reds and greens and blues together.

So, for example, if I mix 255 of red with 255 of Green,

I actually get the color yellow.

If I mix 255 of red with 255 of blue,

I get the color purple or some people say magenta.

Finally, if I mix 255 of green with 255 of blue,

I get a turquoise color or some people say scion.

Two hundred and fifty five of all of the colors gets us white,

255 just in red gets us red,

255 just in green,

gets us green, and 255 just in blue produces blue.

Two hundred and fifty five of red and blue together, gets us magenta,

255 of red and green together,

gets us yellow, and 255 of green and blue together gets a scion.

Zero of all the values gets us black.

But we can actually go a bit further,

we can start mixing our own colours by combining these shades.

So, let me try and get the color orange.

I know the orange is a bit like yellow,

so I'm going to start with 255 and 255 and that gets me yellow.

But now, what I'm going to do I think it's more towards the red,

so I'm going to reduce the amounts of yellow

and there we get an orange color or for example,

I might try a pink.

Well, I know that pink is very much like red but it's a little bit lighter.

So, I wonder if I start increasing these two values evenly,

will I get towards the pink that I want?

There I have a pink. So, you can experiment with mixing your own colors in this way.

So, we talked about how many colors we could get in total

and how did I get to that big number that I said at the beginning? Let me show you.

So, we can use exactly the same method that we used when we

were talking about bits and bytes to work out

how many possible combinations of colors we have.

We have combinations like 255,0;

0,255 all of these different sorts of combinations.

But how many are there in total?

Well, we've got 256 possible values

and then three sets of those and so we do the sum 256 to the power of 3.

That is 256 times 256 times 256 and when we do that sum,

we get the value 16,777,216 possible colors.

So, you have all of those colors to play with.

We call this RGB color space and there are other color spaces as well,

such as HSV or CMYK.

But we're not going to review these at this time.

It's quite fun to develop your own colors for

experimentation but it can be quite tricky finding the perfect shade that you want.

So, there are lots of really good online tools that you

can use and I picked one to show to you.

You can find it at this web address rapidtables.com,

and it's got lots of different ways of picking a color.

So, you can move this pointer around to get

the different shades here and you can see the RGB color values here,

or you can pick a color directly from this chart or there's

even a really long list of

different shades that you can pick from to base your colors on.

So, that's it for RGB colors,

have a play yourself,

experiment with the background command and creating your own colors.