Qiángbì shuā chéng le qiǎnlǜsè, kànqǐlái hěn qīngshuǎng.
The walls were painted light green and look very refreshing.
Tips
usage
Color-shade pattern: 浅 (shallow/light) + color = light shade, 深 (deep) + color = dark shade. So 浅蓝色 is light blue, 深绿色 is dark green. Productive - works with any color word.