Holding at a 45 degree angle and against a white background, like a tablecloth, look on to your glass to comprehend the rich color of the wine bottle. Tilt the glass 45 degrees and hold a white paper on the inside background. https://frank-vinter-2.blogbright.net/wine-pairings-everyday-reasons-to-learn-about-wine-and-wine-pairings-1717623669