Color correction

For those who take their tea with milk, how carefully do you measure the tea and dairy? Are you eyeballing the ratio of the second ingredient (don't reignite the milk-first debate here, please) and getting inconsistent cups?

Here's a helpful tool for getting the proportions just right: the My Cuppa Tea mug, a white mug with color bands printed on the inside of the rim corresponding to various strengths of milky tea. Pour in the milk until the color of the brew matches the Pantone-like shade of your choice, and you'll have a relatively uniform cup each time.