I have just received a painted solid core door to replace a stained wood-faced hollow core door. But the grey-brown paint on the solid core door doesn't match the wood stain on the casing and the trims in the room. Moreover, that grey-brown color is ugly. The dark brown color in the original wood stain looks much nicer and has more depth. What's the way to paint over it to match the color to the original wood stain as close as possible?
If the painting technique is too difficult to get right, what is the way to convert a hollow core door into a solid core door?
Thanks.