First of all, there's a variety of colours out the but https injector doesn't support all of them. The once I know it supports is: "blue, red, green, yellow, purple, violent*
¤STEPS:¤
1. edit the config untill everything is finnished, the log, proxy, host and so forth.
2. Go export the config and as you normally write a message to your config users, just write the following codes in there to enable colour:
<h6>
<font>
<font color="(the colour you want)">
Your text
</font>
<br>
3. If you want to write another text with other colours input it as the following example:
<h6>
<font>
<font color="red">
Your Text Message
</font>
<br>
<font>
<font color="blue">
Your Text Message
</font>
<br>