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.
A dry wine can have as low as 1-2g of carbohydrate in a modest sized glass (200ml) whereas a particularly sweet wine could have over 10g of carbs. A medium sweetness wine is likely to have 5 to 10g of carbs per standard glass. Fortified wines such as sherry and port tend to be sweeter than table wine. A glass of port could contain as much as 20g of carbs.