I'm sure I can do a wooden flooring with that same color pattern and texture . just don't know which one it could be .. not sure if that's wooden flooring in the first place but wooden flooring will look as stunning as this

I can't able to understand what is this better to consult an architector and draw a good plan then only you can proceed work then again Post plan will give suggestion

most colours would go with the light to neutral oak floor. A dark contrast wood panelled door would look great. someone here said that should be avoided. I feel a dark contrast,whether in wood, or a coloured paint would work very well. A painted panelled door (red, blue, green etc) with a wooden floor wood be a bold choice and will give the space a more European look.

Hello , Since you have a beige marble flooring, you can opt for a colour scheme that adds a pop of colour to your space. For example, the green and grey colour scheme or the green and taupe colour scheme will look good on a beige flooring, there is also the neutral earth tone colour scheme which has the combination of wine and taupe colour and lastly there is the earth tone colour scheme which consist of golden wheat/ burnt orange colour, These would add a pop of colour to your space and make it look chic