What colour area rug

I need a rug to run from behind my sitting position up to where my speakers are. I wanted to have my hardwood floor visible from the front wall to where I put my feet up. My room gets a ton of natural light, my whole left wall has a window that runs along 2/3 of the wall  and my room is painted eggshell white. Currently I have a shaggy cotton rug that's black and seems to suck in a lot of light

also any ideas what material rug to get? Cotton? Wool? Shag or no shag?