If your room showcases chemistry of nature, then the landscape or flora paintings would look great on the wall. You can use a single painting to create magic on the wall. With a single painting you should make sure that you do not leave rest of the wall looking empty. You can use supporting accessories to put on both sides of the large paintings and also use a cabinet by the wall under the painting. You can surely use some small artifacts to place on the cabinet which are related to the general theme of your room.
You can also use a combination of several paintings on the wall; you can choose small paintings and place them in different grid designs, related paintings would mean you are creating a lovely collage. You can make different geometric designs out of these paintings and ensure that the wall looks full and vibrant.
If you want to bring in some vibrancy into your home, the best ones are the light colors that reflect the natural light of sun. At the time of building your home it is of utmost importance that you design it in a way and in the direction so as to allow ample sunlight. You can use light tones of all colors, however, what paintings to choose should largely remain your choice.
