Unfortunately neither colour nor turbidity are strong indicators of the overall chemical composition of water. However both colour and turbidity reduce the amount of light penetrating the water and can have significant impact on algae and macrophytes.
Wines range from 0 to about 220 grams per liter sugar, depending on the style. Dry wines can contain up to about 10 grams of sugar per bottle but still taste dry. Bone Dry <1 cal per glass. Dry 0-6 cal per glass.
There are more calories in a glass of wine than you might think. The reason is that alcohol has 7 calories per gram this is more than sugar which has only 4 calories per gram! A sweet wine may have fewer calories than a dry wine one because the highest calorie wines are usually those with the highest alcohol content. A 6 oz glass of 15% wine has around 175 calories. So care should be taken and attention paid.