q21q21, thanks for posting the pic. That's EXACTLY how it looks when SWIM does it. The top is slightly yellow and the bottom is clear.

It looks the same before and after mixing it vigorously for one minute. But under UV light it looks different. If you look at it under UV light, before mixing, the top yellow layer glows bluish green, but after mixing for a minute, and settling, the bottom layer glows bluish green and the top doesn't. Normally, you don't need UV light because the oil layer should be yellowish and clearly visible as a separate layer.

I'm excited to see how it goes for you. Hopefully you get a similar effect to what SWIM gets.