Judge Colston graduated from Georgia State Law School and went into private practice where she practiced real estate law, domestic relations, and railroad law. Judge Colston argued Easterwood v. CSX Railroad in the United States Supreme Court just two years after her graduation. She also practiced employment law and has taught employers how to avoid running afoul of employment issues.

Judge Colston was elected District Attorney for the Rome Judicial Circuit in 1996 where she remained in office until appointed to the Superior Court Bench in 2001. While on the bench, Judge Colston presided over every type of case imaginable and has good insight into how juries and judges perceive people and positions.

Judge Colston retired from full-time judicial duties on January 1, 2019. She was appointed by the Governor as a Senior Judge shortly after retirement. She often fills in for the Cobb County Superior Court bench as well as Pickens County, Polk County, Gilmer County, Bartow County, Floyd County, Gordon, and Whitfield. Judge Colston is an experienced mediator but is rarely called to do pure mediations. If the parties agree, Judge Colston will perform a Judicially Hosted Settlement Conference in which she can give her insights from her years on the bench and be candid with the parties. Being “candid” is her best quality. She is a strong mediator and would also be a good choice for arbitration when the parties desire to present evidence.