Will treating anemia make the person not pale anymore?

Yes. Unless you are pale by nature, correcting anemia back to normal will pink you up!
Yes... Correcting anemia will reverse pallor. However, its important to distinguish pallor from being fair skinned. The former reflects inadequate red cell mass while the latter is a skin pigment issue. Pallor is best assessed by observing mucous membranes (mouth, lips, conjunctiva, etc.), nail beds, etc. Skin color is also a valid way to assess anemia, but take care. Address concerns to your doctor.