If I were using oil paints I would start with raw sienna, which is already close to light oak, then add some raw umber and white, with perhaps a small amount of burnt umber. If you have a piece of oak wood in front of you (or an on-line photograph) you can adjust the amounts of each colour to obtain a very close match.
Watercolor:Burnt Sienna mixed with some Yellow Ochre ,it should end up like Raw Sienna ,compare the two colors to see if it does.
Cadmium yellow, Indian red and Ivory black
You can make a range of "beige" tints by diluting "brown" hues in your palette such as: raw umber or burnt umber -- raw sienna or burnt sienna. These mixtures, if diluted with enough water will be very transparent allowing the paper to show through. So, if you desire a more "flat" appearance to your "beige" try adding Naples Yellow to your "brown" hue.
1 touch raw umber( dark brown) 1 small touch cad red ( to achieve an slightly orange color) mixed with any time of pure yellow or yellow hue
The painter wanted an earth colored scene so he used raw umber as his pigment.
Start with red and add brown to get the exact shade you want. Mix the brown carefully, adding a little at a time until the rust shade becomes the exact one you want.Rust is a browned shade of orange. Mix red and yellow to achieve orange, then add a small amount at a time of blue to brown the colour down. Continue to adjust the colour until you get your desired rust colour.
Umber is a pigment and its color is darker than ocher. It is also, in raw form, dark yellowish-brown. In burnt form, umber is dark brown. Depending on the situation, the pigment changes color.
You can get great results from the most basic of pallets. Try raw sienna layered with burnt umber and maybe a bit of sepia. Don't mix the colour on you pallet, start with lightest colour (raw sienna) and paint a layer. Let it dry completely, then paint on your next layer. The second layer can even be the same colour. Don't use too much of the sepia or it will "deaden" your painting. Don't forget to leave some areas white. That will give your trumpet sparkle.
Umber
The cast of Raw Umber - 2012 includes: Zeshan Bhatti as Boyd Scott Churchson as Boris Carrie Ferrante as Nurse Bud Hoenecker as Bud Joan Hoenecker as Head Nurse Mike Tiscia as Doctor Emmerson Nicholas Wilder as Henry Doyle
You can paint the walls any color your heart desires. Umber is a relative of brown which is known as a neutral. Neutrals work with any color. Fit your personal taste. My suggestion is to go to your local paint department, grab some swatches of your favorite colors and bring them home to compare with your furniture. Do you want a calm, bold, or neutral statement? I don't think this is a question you should ask others. Decide for yourself and be proud of your decision! Good Luck!