Hi all, I need your help in changing brick mortar color. My house has 3-side brick and i would like to change the brick mortar color as its very dark and almost close to the brick color. It is not looking nice so i m thinking to change it to a lighter colour. Could any of you please give me some guide-lines on how to do this? Thanks for your help

A house with a concrete block basement garage, a wood-frame first floor and a brick exterior. The basement extends above grade about four feet. The house was hit near a corner by a car. Luckily the house was protected by a steel I-beam embeded in concrete which took most of the impact. The interior basement concrete blocks were pushed in and the mortar cracked. About four blocks were completly dislodged. Three concrete blocks at the top of the adjacent corner wall were cracked. The house has a large steel I-beam on top of the basement concrete block wall, as a sill plate for the frist floor. Don’t ask me why. It appears the basement garage may have been installed as an after thought. In anycase the beam will support the first floor while the concrete block is replace below the beam. But what about the exterior brick wall. The exterior brick mortar is cracked and the bricks are caved in about an inch. The problem, how to support the brick wall above the damaged area while replacing the brick below. There is a basement window at grade lever about five feet from the corner and a bedroom window at the upper limit of the damage. Any suggestions or advice would be appreciated.