This next bit is a continuation of my post from yesterday. If you're not interested in the trials and tribulations on mixing paint then feel free to skip it. Yesterday I wrote about mixing greens and how picking up a tube that says yellow and one that says blue won't always give you what you're expecting. Most artists I know use ultramarine blue, which is the warmest blue. This is where a lot of people get confused, how can blue be warm? Ultramarine blue is biased towards red, it's a more purple blue. A pthalo blue would be a cool blue, it leans more towards the green side. That's the easiest way, for me, to differentiate a warm and cool blue. Same with the other colours. If a red leans towards purple it's cool, if it leans towards orange it's warm and so on and so forth. The colour wheel might seem a bit elementary but they're pretty handy for those just learning how to mix paint. About those greens I was trying to achieve yesterday.
Mixing paint is fun for me. It's like playing "mad scientist" and magician at the same time.