How do you combine?

Question

Is there a list of combinations or you just make them yourself?

Answer 1

Try these
https://code.sololearn.com/WJly9ZuywWBU/?ref=app
https://code.sololearn.com/W5Of8safsGpc/?ref=app

Answer 2

great thank you

Answer 3

combination of hex and colours to form a new colour... like how they did with red and orange?