RichText Box Formating Coloring And Text Adding?

This is my second post and today I have the following problem:I want to make a Steam Gamertag Maker ..

1) I have a RichTextBox.

2) I have 8 buttons each representing a color (red, green, yellow, blue, teal, pink, white and black ..)

3.1) I enter some text into the richtext box.

3.2) I select part of the text.

3.3) When I press a button, e.g Blue and the selected text changes to that color.

3.5) I have a copy button, that copies the content of the richtextbox .. and that is where the problem starts .. (The copied text has no color and so on .

4) If I press, for example the Blue Button, I want that the following text "^4", is written just in front of the selected text and that the selected text is colored blue at the same time. The other text should not be affected by those adjustments ..

5) If the "^4" is inserted, it should be hidden

6) If everything is colored, I press the copy button and it should copy the whole text, including for example the "^4" ..

7) I want the "^4" to be hidden, because it looks better, but if I copy the content of the RichText box it should be included ..