If plants don't get the right amount of light, they will not bloom. Phals thrive in a sunny east window. Sun porches and Bay windows also work well. Too much sun will scorch the leaves. On the other hand, too little light will also affect plant growth.
Orchid leaves normally are a lighter green.
Dark green leaves indicate the plant needs brighter light. Orchids will grow in low light for years but will generally not bloom. Watering is another important thing to pay attention to. Orchids grow on other plants in humid climates. Their firm, white roots collect water from the air and gather nutrients from rain water flowing over the roots.