I have been wanting to try a shot like this. The Rainbow challenge is really pushing me to try some things I've been putting on the back burner. So I'm thankful for that. Also, I learned how to fix some minor color corrections in PS using the eyedropper tool. And my "photography assistant" (my daughter) and I had some laughs trying to get this shot today. I will put up a "blooper" in another album showing the pour totally missing the glass!!
I like your choice for red, and I am glad you are having fun. I am also enjoying it and I agree with you that it gives us a reason to try some new things!