Every single blood color, text color, and icon color that is canon within Homestuck. The text color sometimes differed from the blood color, as did the symbol (icon, when you go to the wikia.) I also took into account the canon fantroll blood colors, the lusi blood colors (back in Act 5, when Eridan and Vriska killed lusi for Feferi). Lastly, I used the blood colors from the two unknown grubs that were in Openbound Part 2.
Feel free to use!