Coleus plants need to be kept moist, but do not let soil get soggy.
Allow your Coleus plenty of light, especially in the summertime. Pale leaves means it is getting too much sun. If you notice leaf drop, it means it is not getting enough light.
Average room temperature should be no lower than 10°C.
Move Coleus to a larger container as it grows. Your plant will be taller if you give it space to grow roots. Pinch back tips of the plant to make it full and bushy.
Take cuttings from parent plant in winter or early spring. Newly planted coleus like to be kept just moist.