I patched a few scrapes and small holes in the drywall, then got a can of color-matched paint in the hardware store (I took a sample with me, they color-matched it and prepared the paint). It is a white color anyways.
However after I applied a first coat, I clearly see that there is a difference in color tones on the wall - the new coat is "darker" then the original one. So I applied the 2nd coat at one part of the wall to see any changes - but I see no difference.
Was I supposed to apply a primer first? Isn't it late now to apply it and then re-paint?