Oldmike,
As far as a general rule of thumb goes, dilute compost tea until it is slightly lighter in color than ice tea.
If the only liquid your
plants are getting is the compost tea, then you may need to worry about burning your
plants, but if you are supplementing your watering with compost tea (every other watering or every 3rd watering), then the other waterings will dilute the compost tea too.
The nice thing about compost is that it's very difficult to burn things with it. Sure you can do it, but you have to use very high concentrations, and since it has so much organic matter, it is practally burn proof. Of course if you let your compost tea reduce to a thick dark liquid, you might burn the leaves if it gets on the
plants.