What is the wall color? Thanks

Hello - Sorry, we have no information about anything but the light fixture. I'll reach out to our designer for more information. Thanks!

Looks like mustard color. Try to use muted and more of a pastel color that is more pleasant to eye rather than the vibrant colors.
Just a note, colors are very tricky and tedious! Same color in same room can shown differently due to the difference of the direction of sun light. . Also different interior lighting and Interior furniture can also affect the color due to the scientific fact that when light rays travel it basically reflects of the furniture, which can also change the color tone.

When you want to paint a room, I suggest you get a different color chips inside the exact room and wall you need to paint. Study these colors you choose under different lighting, i.e. day time versus night time to determine which is the best for you.

At last, do not be over critical on colors because all colors will change inside a room over a period of time anyways due to ultra-violate of the sunlight, which called "UV yellowing or fading".

I have Benjamin Moore Sunny Days on my walls, and it looks just like this. Very warm, not at all mustardy. Worth a try if you're looking for a cozy yellow. http://www.benjaminmoore.com/en-us/paint-color/sunnydays