If the leaves are dewy, it's probably alright. The leaves will never turn red, at least not in normal light. The dew- producing glands should be reddish if you look carefully at them. This effect is usually most noticeable on new leaves that are still unfurling. The glands on mine are only barely reddish in the mid-winter. I think my plants get just about enough light. Anybody who's ever been to Southern Spain, Morocco, or Portugal will know that the sun there is fierce for most of the year. This species certainly appreciates as much sunlight as it can get