Types of Arowana

Golden head was the craze for a while. Formerly was golden lines.
Personally all this is marketing. Must admit that the arowanas should be of good parentage in order to achieve this (assuming there is no artificial mean).
Having said that, if one looks closely at all these so called golden head arowanas, most of the time the arowanas look like bleached white - so you say if they are good or not. I leave to the judgement to yourself - you can make your own call on this. No right or wrong.
As for chilli red or blood red, you think the farm is so free to segregate or even know which is which. I doubt so. At least the farm does so right from the beginning. To me, as long as it turns out into good reds, who cares if it is chilli or blood red (if weak in colour, I cannot even be bothered with the grade).